Enterprise Linux (RHEL) Red Hat Enterprise Linux (RHEL)

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Recent Red Hat Enterprise Linux (RHEL) Security Advisories

Advisory Title Published
RHSA-2021:3144 (RHSA-2021:3144) Low: .NET Core 2.1 on Red Hat Enterprise Linux security and bugfix update August 11, 2021
RHSA-2021:1547 (RHSA-2021:1547) Important: .NET Core 3.1 on Red Hat Enterprise Linux security and bugfix update May 12, 2021
RHSA-2021:1546 (RHSA-2021:1546) Important: .NET 5.0 on Red Hat Enterprise Linux security and bugfix update May 12, 2021

By the Year

In 2024 there have been 44 vulnerabilities in Red Hat Enterprise Linux (RHEL) with an average score of 6.5 out of ten. Last year Enterprise Linux (RHEL) had 187 security vulnerabilities published. If vulnerabilities keep coming in at the current rate, it appears that number of security vulnerabilities in Enterprise Linux (RHEL) in 2024 could surpass last years number. However, the average CVE base score of the vulnerabilities in 2024 is greater by 0.09.

Year Vulnerabilities Average Score
2024 44 6.46
2023 187 6.37
2022 174 6.71
2021 147 6.76
2020 104 6.41
2019 290 6.29
2018 91 7.17

It may take a day or so for new Enterprise Linux (RHEL) vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Red Hat Enterprise Linux (RHEL) Security Vulnerabilities

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs)

CVE-2023-50387 7.5 - High - February 14, 2024

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.

Allocation of Resources Without Limits or Throttling

A flaw was found in the Linux kernel's NVMe driver

CVE-2023-6356 7.5 - High - February 07, 2024

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver and causing kernel panic and a denial of service.

NULL Pointer Dereference

A flaw was found in the Linux kernel's NVMe driver

CVE-2023-6535 7.5 - High - February 07, 2024

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.

NULL Pointer Dereference

A flaw was found in the Linux kernel's NVMe driver

CVE-2023-6536 7.5 - High - February 07, 2024

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.

NULL Pointer Dereference

A flaw was found in the grub2-set-bootflag utility of grub2

CVE-2024-1048 3.3 - Low - February 06, 2024

A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.

Insufficient Cleanup

An information disclosure flaw was found in ansible-core due to a failure to respect the ANSIBLE_NO_LOG configuration in some scenarios

CVE-2024-0690 5.5 - Medium - February 06, 2024

An information disclosure flaw was found in ansible-core due to a failure to respect the ANSIBLE_NO_LOG configuration in some scenarios. It was discovered that information is still included in the output in certain tasks, such as loop items. Depending on the task, this issue may include sensitive information, such as decrypted secret values.

Output Sanitization

A flaw was found in m2crypto

CVE-2023-50781 7.5 - High - February 05, 2024

A flaw was found in m2crypto. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

Side Channel Attack

A flaw was found in the python-cryptography package

CVE-2023-50782 7.5 - High - February 05, 2024

A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

Side Channel Attack

A path traversal vulnerability was found in the CPIO utility

CVE-2023-7216 8.8 - High - February 05, 2024

A path traversal vulnerability was found in the CPIO utility. This issue could allow a remote unauthenticated attacker to trick a user into opening a specially crafted archive. During the extraction process, the archiver could follow symlinks outside of the intended directory, which could be utilized to run arbitrary commands on the target system.

Directory traversal

A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel

CVE-2023-6240 6.5 - Medium - February 04, 2024

A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. This issue may allow a network attacker to decrypt ciphertexts or forge signatures, limiting the services that use that private key.

Side Channel Attack

A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant

CVE-2023-5992 5.9 - Medium - January 31, 2024

A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

Side Channel Attack

A timing side-channel vulnerability has been discovered in the opencryptoki package while processing RSA PKCS#1 v1.5 padded ciphertexts

CVE-2024-0914 5.9 - Medium - January 31, 2024

A timing side-channel vulnerability has been discovered in the opencryptoki package while processing RSA PKCS#1 v1.5 padded ciphertexts. This flaw could potentially enable unauthorized RSA ciphertext decryption or signing, even without access to the corresponding private key.

Side Channel Attack

A flaw was found in the Linux kernel's memory deduplication mechanism

CVE-2024-0564 6.5 - Medium - January 30, 2024

A flaw was found in the Linux kernel's memory deduplication mechanism. The max page sharing of Kernel Samepage Merging (KSM), added in Linux kernel version 4.4.0-96.119, can create a side channel. When the attacker and the victim share the same host and the default setting of KSM is "max page sharing=256", it is possible for the attacker to time the unmap to merge with the victim's page. The unmapping time depends on whether it merges with the victim's page and additional physical pages are created beyond the KSM's "max page share". Through these operations, the attacker can leak the victim's page.

Side Channel Attack

A flaw was found in the MZ binary format in Shim

CVE-2023-40551 7.1 - High - January 29, 2024

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.

Out-of-bounds Read

A flaw was found in Shim when an error happened while creating a new ESL variable

CVE-2023-40546 5.5 - Medium - January 29, 2024

A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances.

NULL Pointer Dereference

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information

CVE-2023-40550 5.5 - Medium - January 29, 2024

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.

Out-of-bounds Read

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary

CVE-2023-40549 5.5 - Medium - January 29, 2024

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.

Out-of-bounds Read

A null pointer dereference flaw was found in the hugetlbfs_fill_super function in the Linux kernel hugetlbfs (HugeTLB pages) functionality

CVE-2024-0841 7.8 - High - January 28, 2024

A null pointer dereference flaw was found in the hugetlbfs_fill_super function in the Linux kernel hugetlbfs (HugeTLB pages) functionality. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

NULL Pointer Dereference

A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFReadRGBATileExt() API

CVE-2023-52356 7.5 - High - January 25, 2024

A segment fault (SEGV) flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFReadRGBATileExt() API. This flaw allows a remote attacker to cause a heap-buffer overflow, leading to a denial of service.

Memory Corruption

An out-of-memory flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFRasterScanlineSize64() API

CVE-2023-52355 7.5 - High - January 25, 2024

An out-of-memory flaw was found in libtiff that could be triggered by passing a crafted tiff file to the TIFFRasterScanlineSize64() API. This flaw allows a remote attacker to cause a denial of service via a crafted input with a size smaller than 379 KB.

Memory Corruption

A remote code execution vulnerability was found in Shim

CVE-2023-40547 8.3 - High - January 25, 2024

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.

Memory Corruption

A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel

CVE-2024-0775 7.1 - High - January 22, 2024

A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This flaw allows a local user to cause an information leak problem while freeing the old quota file names before a potential failure, leading to a use-after-free.

Dangling pointer

A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket

CVE-2023-6531 7 - High - January 21, 2024

A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on.

Race Condition

A flaw was found in the Netfilter subsystem in the Linux kernel

CVE-2024-0607 6.6 - Medium - January 18, 2024

A flaw was found in the Netfilter subsystem in the Linux kernel. The issue is in the nft_byteorder_eval() function, where the code iterates through a loop and writes to the `dst` array. On each iteration, 8 bytes are written, but `dst` is an array of u32, so each element only has space for 4 bytes. That means every iteration overwrites part of the previous element corrupting this array of u32. This flaw allows a local user to cause a denial of service or potentially break NetFilter functionality.

A flaw was found in the X.Org server

CVE-2024-0409 7.8 - High - January 18, 2024

A flaw was found in the X.Org server. The cursor code in both Xephyr and Xwayland uses the wrong type of private at creation. It uses the cursor bits type with the cursor as private, and when initiating the cursor, that overwrites the XSELINUX context.

Memory Corruption

A flaw was found in the X.Org server

CVE-2024-0408 5.5 - Medium - January 18, 2024

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.

An out-of-bounds memory write flaw was found in the Linux kernels Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination

CVE-2024-0646 7.8 - High - January 17, 2024

An out-of-bounds memory write flaw was found in the Linux kernels Transport Layer Security functionality in how a user calls a function splice with a ktls socket as the destination. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Memory Corruption

A denial of service vulnerability was found in tipc_crypto_key_revoke in net/tipc/crypto.c in the Linux kernels TIPC subsystem

CVE-2024-0641 5.5 - Medium - January 17, 2024

A denial of service vulnerability was found in tipc_crypto_key_revoke in net/tipc/crypto.c in the Linux kernels TIPC subsystem. This flaw allows guests with local user privileges to trigger a deadlock and potentially crash the system.

Improper Locking

A denial of service vulnerability due to a deadlock was found in sctp_auto_asconf_init in net/sctp/socket.c in the Linux kernels SCTP subsystem

CVE-2024-0639 5.5 - Medium - January 17, 2024

A denial of service vulnerability due to a deadlock was found in sctp_auto_asconf_init in net/sctp/socket.c in the Linux kernels SCTP subsystem. This flaw allows guests with local user privileges to trigger a deadlock and potentially crash the system.

Improper Locking

A heap use-after-free issue has been identified in SQLite in the jsonParseAddNodeArray() function in sqlite3.c

CVE-2024-0232 5.5 - Medium - January 16, 2024

A heap use-after-free issue has been identified in SQLite in the jsonParseAddNodeArray() function in sqlite3.c. This flaw allows a local attacker to leverage a victim to pass specially crafted malicious input to the application, potentially causing a crash and leading to a denial of service.

Dangling pointer

A vulnerability was found in GnuTLS

CVE-2024-0553 7.5 - High - January 16, 2024

A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981.

Side Channel Attack

A use-after-free flaw was found in the Linux Kernel

CVE-2024-0562 7.8 - High - January 15, 2024

A use-after-free flaw was found in the Linux Kernel. When a disk is removed, bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed, which can result in the timer attempting to access the recently freed bdi_writeback.

Dangling pointer

An authentication bypass flaw was found in GRUB due to the way

CVE-2023-4001 6.8 - Medium - January 15, 2024

An authentication bypass flaw was found in GRUB due to the way that GRUB uses the UUID of a device to search for the configuration file that contains the password hash for the GRUB password protection feature. An attacker capable of attaching an external drive such as a USB stick containing a file system with a duplicate UUID (the same as in the "/boot/" file system) can bypass the GRUB password protection feature on UEFI systems, which enumerate removable drives before non-removable ones. This issue was introduced in a downstream patch in Red Hat's version of grub2 and does not affect the upstream package.

Authentication Bypass by Spoofing

A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel

CVE-2023-6915 5.5 - Medium - January 15, 2024

A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may allow an attacker using this library to cause a denial of service problem due to a missing check at a function return.

NULL Pointer Dereference

Relax-and-Recover (aka ReaR) through 2.7 creates a world-readable initrd when using GRUB_RESCUE=y

CVE-2024-23301 5.5 - Medium - January 12, 2024

Relax-and-Recover (aka ReaR) through 2.7 creates a world-readable initrd when using GRUB_RESCUE=y. This allows local attackers to gain access to system secrets otherwise only readable by root.

A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages

CVE-2023-6683 6.5 - Medium - January 12, 2024

A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.

NULL Pointer Dereference

A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem

CVE-2024-0443 5.5 - Medium - January 12, 2024

A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgroup_rstat_flush() is only called at css_release_work_fn(), which is called when the blkcg reference count reaches 0. This circular dependency will prevent blkcg and some blkgs from being freed after they are made offline. This issue may allow an attacker with a local access to cause system instability, such as an out of memory error.

Exposure of Resource to Wrong Sphere

A Cross-site request forgery vulnerability exists in ipa/session/login_password in all supported versions of IPA

CVE-2023-5455 6.5 - Medium - January 10, 2024

A Cross-site request forgery vulnerability exists in ipa/session/login_password in all supported versions of IPA. This flaw allows an attacker to trick the user into submitting a request that could perform actions as the user, resulting in a loss of confidentiality and system integrity. During community penetration testing it was found that for certain HTTP end-points FreeIPA does not ensure CSRF protection. Due to implementation details one cannot use this flaw for reflection of a cookie representing already logged-in user. An attacker would always have to go through a new authentication attempt.

Session Riding

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations

CVE-2021-3600 7.8 - High - January 08, 2024

It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.

Out-of-bounds Read

A use-after-free flaw was found in PackageKitd

CVE-2024-0217 3.3 - Low - January 03, 2024

A use-after-free flaw was found in PackageKitd. In some conditions, the order of cleanup mechanics for a transaction could be impacted. As a result, some memory access could occur on memory regions that were previously freed. Once freed, a memory region can be reused for other allocations and any previously stored data in this memory region is considered lost.

Dangling pointer

A flaw was found in libssh

CVE-2023-6004 4.8 - Medium - January 03, 2024

A flaw was found in libssh. By utilizing the ProxyCommand or ProxyJump feature, users can exploit unchecked hostname syntax on the client. This issue may allow an attacker to inject malicious code into the command of the features mentioned through the hostname parameter.

Injection

A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel

CVE-2023-7192 4.4 - Medium - January 02, 2024

A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.

Memory Leak

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel

CVE-2024-0193 6.7 - Medium - January 02, 2024

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

Dangling pointer

A stack based buffer overflow was found in the virtio-net device of QEMU

CVE-2023-6693 5.3 - Medium - January 02, 2024

A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory and send it to the wire, causing an information leak.

Memory Corruption

A flaw was found in shadow-utils

CVE-2023-4641 5.5 - Medium - December 27, 2023

A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.

authentification

OpenSSH through 9.6, when common types of DRAM are used, might

CVE-2023-51767 7 - High - December 24, 2023

OpenSSH through 9.6, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges.

sendmail through 8.17.2 allows SMTP smuggling in certain configurations

CVE-2023-51765 5.3 - Medium - December 24, 2023

sendmail through 8.17.2 allows SMTP smuggling in certain configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because sendmail supports <LF>.<CR><LF> but some other popular e-mail servers do not. This is resolved in 8.18 and later versions with 'o' in srv_features.

Insufficient Verification of Data Authenticity

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options

CVE-2023-51764 5.3 - Medium - December 24, 2023

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports <LF>.<CR><LF> but some other popular e-mail servers do not. To prevent attack variants (by always disallowing <LF> without <CR>), a different solution is required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.

Insufficient Verification of Data Authenticity

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel

CVE-2023-6546 7 - High - December 21, 2023

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.

Race Condition

A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends

CVE-2023-6918 5.3 - Medium - December 19, 2023

A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.

Unchecked Return Value

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such

CVE-2023-48795 5.9 - Medium - December 18, 2023

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.

Improper Validation of Integrity Check Value

A flaw was found in the mod_proxy_cluster in the Apache server

CVE-2023-6710 5.4 - Medium - December 12, 2023

A flaw was found in the mod_proxy_cluster in the Apache server. This issue may allow a malicious user to add a script in the 'alias' parameter in the URL to trigger the stored cross-site scripting (XSS) vulnerability. By adding a script on the alias parameter on the URL, it adds a new virtual host and adds the script to the cluster-manager page.

XSS

A null pointer dereference vulnerability was found in dpll_pin_parent_pin_set() in drivers/dpll/dpll_netlink.c in the Digital Phase Locked Loop (DPLL) subsystem in the Linux kernel

CVE-2023-6679 5.5 - Medium - December 11, 2023

A null pointer dereference vulnerability was found in dpll_pin_parent_pin_set() in drivers/dpll/dpll_netlink.c in the Digital Phase Locked Loop (DPLL) subsystem in the Linux kernel. This issue could be exploited to trigger a denial of service.

NULL Pointer Dereference

A memory disclosure vulnerability was found in PostgreSQL

CVE-2023-5868 4.3 - Medium - December 10, 2023

A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory.

A flaw was found in PostgreSQL involving the pg_cancel_backend role

CVE-2023-5870 4.4 - Medium - December 10, 2023

A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.

A flaw was found in PostgreSQL

CVE-2023-5869 8.8 - High - December 10, 2023

A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through missing overflow checks during SQL array value modification. This issue exists due to an integer overflow during array modification where a remote user can trigger the overflow by providing specially crafted data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary bytes to memory and extensively read the server's memory.

Integer Overflow or Wraparound

A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel

CVE-2023-6622 5.5 - Medium - December 08, 2023

A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.

NULL Pointer Dereference

An out-of-bounds read vulnerability was found in smb2_dump_detail in fs/smb/client/smb2ops.c in the Linux Kernel

CVE-2023-6610 7.1 - High - December 08, 2023

An out-of-bounds read vulnerability was found in smb2_dump_detail in fs/smb/client/smb2ops.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.

Out-of-bounds Read

An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel

CVE-2023-6606 7.1 - High - December 08, 2023

An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.

Out-of-bounds Read

A flaw was found in libnbd

CVE-2023-5871 5.3 - Medium - November 27, 2023

A flaw was found in libnbd, due to a malicious Network Block Device (NBD), a protocol for accessing Block Devices such as hard disks over a Network. This issue may allow a malicious NBD server to cause a Denial of Service.

assertion failure

A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality

CVE-2023-6176 4.7 - Medium - November 16, 2023

A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific socket configuration, which could allow a local user to crash the system or escalate their privileges on the system.

NULL Pointer Dereference

An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel

CVE-2023-6121 4.3 - Medium - November 16, 2023

An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This issue may allow a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data being printed and potentially leaked to the kernel ring buffer (dmesg).

Out-of-bounds Read

A race condition was found in the QXL driver in the Linux kernel

CVE-2023-39198 6.4 - Medium - November 09, 2023

A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.

Dangling pointer

Wiki comments required additional sanitizing and access restrictions to prevent a stored XSS risk and potential IDOR risk.

CVE-2023-5544 5.4 - Medium - November 09, 2023

Wiki comments required additional sanitizing and access restrictions to prevent a stored XSS risk and potential IDOR risk.

XSS

ID numbers displayed in the quiz grading report required additional sanitizing to prevent a stored XSS risk.

CVE-2023-5546 5.4 - Medium - November 09, 2023

ID numbers displayed in the quiz grading report required additional sanitizing to prevent a stored XSS risk.

XSS

The course upload preview contained an XSS risk for users uploading unsafe data.

CVE-2023-5547 6.1 - Medium - November 09, 2023

The course upload preview contained an XSS risk for users uploading unsafe data.

XSS

A flaw was found in OpenSC packages that allow a potential PIN bypass

CVE-2023-40660 6.6 - Medium - November 06, 2023

A flaw was found in OpenSC packages that allow a potential PIN bypass. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length pin is passed. This issue poses a security risk, particularly for OS logon/screen unlock and for small, permanently connected tokens to computers. Additionally, the token can internally track login status. This flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system without the user's awareness.

authentification

Several memory vulnerabilities were identified within the OpenSC packages

CVE-2023-40661 6.4 - Medium - November 06, 2023

Several memory vulnerabilities were identified within the OpenSC packages, particularly in the card enrollment process using pkcs15-init when a user or administrator enrolls cards. To take advantage of these flaws, an attacker must have physical access to the computer system and employ a custom-crafted USB device or smart card to manipulate responses to APDUs. This manipulation can potentially allow compromise key generation, certificate loading, and other card management operations during enrollment.

Buffer Overflow

An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling symmetric key encryption

CVE-2023-4535 3.8 - Low - November 06, 2023

An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling symmetric key encryption. Exploiting this flaw requires an attacker to have physical access to the computer and a specially crafted USB device or smart card. This flaw allows the attacker to manipulate APDU responses and potentially gain unauthorized access to sensitive data, compromising the system's security.

Out-of-bounds Read

A flaw was found in KVM

CVE-2023-5090 5.5 - Medium - November 06, 2023

A flaw was found in KVM. An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.

Improper Handling of Exceptional Conditions

A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements

CVE-2023-42669 6.5 - Medium - November 06, 2023

A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task.

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code)

CVE-2023-5088 7 - High - November 03, 2023

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.

Improper Synchronization

A path traversal vulnerability was identified in Samba when processing client pipe names connecting to Unix domain sockets within a private directory

CVE-2023-3961 9.8 - Critical - November 03, 2023

A path traversal vulnerability was identified in Samba when processing client pipe names connecting to Unix domain sockets within a private directory. Samba typically uses this mechanism to connect SMB clients to remote procedure call (RPC) services like SAMR LSA or SPOOLSS, which Samba initiates on demand. However, due to inadequate sanitization of incoming client pipe names, allowing a client to send a pipe name containing Unix directory traversal characters (../). This could result in SMB clients connecting as root to Unix domain sockets outside the private directory. If an attacker or client managed to send a pipe name resolving to an external service using an existing Unix domain socket, it could potentially lead to unauthorized access to the service and consequential adverse events, including compromise or service crashes.

Directory traversal

A use-after-free flaw was found in the Linux kernels mm/mremap memory address space accounting source code

CVE-2023-1476 7 - High - November 03, 2023

A use-after-free flaw was found in the Linux kernels mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.

Dangling pointer

SQUID is vulnerable to HTTP request smuggling, caused by chunked decoder lenience

CVE-2023-46846 5.3 - Medium - November 03, 2023

SQUID is vulnerable to HTTP request smuggling, caused by chunked decoder lenience, allows a remote attacker to perform Request/Response smuggling past firewall and frontend security systems.

HTTP Request Smuggling

Squid is vulnerable to a Denial of Service, where a remote attacker

CVE-2023-46847 7.5 - High - November 03, 2023

Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.

Classic Buffer Overflow

Squid is vulnerable to Denial of Service, where a remote attacker can perform DoS by sending ftp:// URLs in HTTP Request messages or constructing ftp:// URLs

CVE-2023-46848 7.5 - High - November 03, 2023

Squid is vulnerable to Denial of Service, where a remote attacker can perform DoS by sending ftp:// URLs in HTTP Request messages or constructing ftp:// URLs from FTP Native input.

Incorrect Conversion between Numeric Types

A vulnerability was discovered in Samba, where the flaw

CVE-2023-4091 6.5 - Medium - November 03, 2023

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "acl_xattr" is configured with "acl_xattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba's permissions.

Incorrect Default Permissions

Squid is vulnerable to Denial of Service attack against HTTP and HTTPS clients due to an Improper Handling of Structural Elements bug.

CVE-2023-5824 7.5 - High - November 03, 2023

Squid is vulnerable to Denial of Service attack against HTTP and HTTPS clients due to an Improper Handling of Structural Elements bug.

Improper Handling of Exceptional Conditions

A vulnerability was found in Avahi

CVE-2023-38473 5.5 - Medium - November 02, 2023

A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function.

assertion failure

A vulnerability was found in Avahi

CVE-2023-38469 5.5 - Medium - November 02, 2023

A vulnerability was found in Avahi, where a reachable assertion exists in avahi_dns_packet_append_record.

assertion failure

A vulnerability was found in Avahi

CVE-2023-38470 5.5 - Medium - November 02, 2023

A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function.

assertion failure

A vulnerability was found in Avahi

CVE-2023-38471 5.5 - Medium - November 02, 2023

A vulnerability was found in Avahi. A reachable assertion exists in the dbus_set_host_name function.

assertion failure

A vulnerability was found in Avahi

CVE-2023-38472 5.5 - Medium - November 02, 2023

A vulnerability was found in Avahi. A reachable assertion exists in the avahi_rdata_parse() function.

assertion failure

A heap-buffer-overflow vulnerability was found in LibTIFF, in extractImageSection() at tools/tiffcrop.c:7916 and tools/tiffcrop.c:7801

CVE-2023-3164 5.5 - Medium - November 02, 2023

A heap-buffer-overflow vulnerability was found in LibTIFF, in extractImageSection() at tools/tiffcrop.c:7916 and tools/tiffcrop.c:7801. This flaw allows attackers to cause a denial of service via a crafted tiff file.

Memory Corruption

A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel

CVE-2023-1192 6.5 - Medium - November 01, 2023

A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.

Dangling pointer

A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel

CVE-2023-5178 9.8 - Critical - November 01, 2023

A use-after-free vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation.

Dangling pointer

A vulnerability was found in insights-client

CVE-2023-3972 7.8 - High - November 01, 2023

A vulnerability was found in insights-client. This security issue occurs because of insecure file operations or unsafe handling of temporary files and directories that lead to local privilege escalation. Before the insights-client has been registered on the system by root, an unprivileged local user or attacker could create the /var/tmp/insights-client directory (owning the directory with read, write, and execute permissions) on the system. After the insights-client is registered by root, an attacker could then control the directory content that insights are using by putting malicious scripts into it and executing arbitrary code as root (trivially bypassing SELinux protections because insights processes are allowed to disable SELinux system-wide).

Exposure of Resource to Wrong Sphere

A out-of-bounds write flaw was found in the xorg-x11-server

CVE-2023-5367 7.8 - High - October 25, 2023

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service.

Memory Corruption

A use-after-free flaw was found in the xorg-x11-server

CVE-2023-5380 4.7 - Medium - October 25, 2023

A use-after-free flaw was found in the xorg-x11-server. An X server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed.

Dangling pointer

A use-after-free flaw was found in xorg-x11-server-Xvfb

CVE-2023-5574 7 - High - October 25, 2023

A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.

Dangling pointer

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver

CVE-2023-4692 7.8 - High - October 25, 2023

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.

Memory Corruption

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver

CVE-2023-4693 4.6 - Medium - October 25, 2023

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.

Out-of-bounds Read

The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface

CVE-2023-5633 7.8 - High - October 23, 2023

The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges.

Dangling pointer

A flaw was found in the tracker-miners package

CVE-2023-5557 7.7 - High - October 13, 2023

A flaw was found in the tracker-miners package. A weakness in the sandbox allows a maliciously-crafted file to execute code outside the sandbox if the tracker-extract process has first been compromised by a separate vulnerability.

A vulnerability was found in libXpm where a vulnerability exists due to a boundary condition, a local user

CVE-2023-43789 5.5 - Medium - October 12, 2023

A vulnerability was found in libXpm where a vulnerability exists due to a boundary condition, a local user can trigger an out-of-bounds read error and read contents of memory on the system.

Out-of-bounds Read

The HTTP/2 protocol

CVE-2023-44487 7.5 - High - October 10, 2023

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

Resource Exhaustion

A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function

CVE-2023-43787 7.8 - High - October 10, 2023

A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.

Integer Overflow or Wraparound

A vulnerability was found in libXpm due to a boundary condition within the XpmCreateXpmImageFromBuffer() function

CVE-2023-43788 5.5 - Medium - October 10, 2023

A vulnerability was found in libXpm due to a boundary condition within the XpmCreateXpmImageFromBuffer() function. This flaw allows a local attacker to trigger an out-of-bounds read error and read the contents of memory on the system.

Out-of-bounds Read

A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function

CVE-2023-43785 5.5 - Medium - October 10, 2023

A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.

Out-of-bounds Read

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