Eos Arista Eos

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By the Year

In 2022 there have been 4 vulnerabilities in Arista Eos with an average score of 8.5 out of ten. Last year Eos had 4 security vulnerabilities published. If vulnerabilities keep coming in at the current rate, it appears that number of security vulnerabilities in Eos in 2022 could surpass last years number. However, the average CVE base score of the vulnerabilities in 2022 is greater by 4.05.

Year Vulnerabilities Average Score
2022 4 8.45
2021 4 4.40
2020 8 6.91
2019 2 7.00
2018 3 7.93

It may take a day or so for new Eos 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 Arista Eos Security Vulnerabilities

The impact of this vulnerability is

CVE-2021-28503 9.8 - Critical - February 04, 2022

The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.

authentification

An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA APIs by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.

CVE-2021-28500 7.8 - High - January 14, 2022

An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA APIs by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.

AuthZ

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed

CVE-2021-28507 7.1 - High - January 14, 2022

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

AuthZ

An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially

CVE-2021-28506 9.1 - Critical - January 14, 2022

An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.

AuthZ

On systems running Arista EOS and CloudEOS with the affected release version

CVE-2021-28496 6.5 - Medium - October 21, 2021

On systems running Arista EOS and CloudEOS with the affected release version, when using shared secret profiles the password configured for use by BiDirectional Forwarding Detection (BFD) will be leaked when displaying output over eAPI or other JSON outputs to other authenticated users on the device. The affected EOS Versions are: all releases in 4.22.x train, 4.23.9 and below releases in the 4.23.x train, 4.24.7 and below releases in the 4.24.x train, 4.25.4 and below releases in the 4.25.x train, 4.26.1 and below releases in the 4.26.x train

Missing Encryption of Sensitive Data

A flaw was found in dnsmasq before version 2.83

CVE-2020-25686 3.7 - Low - January 20, 2021

A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.

Improperly Implemented Security Check for Standard

A flaw was found in dnsmasq before version 2.83

CVE-2020-25684 3.7 - Low - January 20, 2021

A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.

A flaw was found in dnsmasq before version 2.83

CVE-2020-25685 3.7 - Low - January 20, 2021

A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is) this flaw allows an off-path attacker to find several different domains all having the same hash, substantially reducing the number of attempts they would have to perform to forge a reply and get it accepted by dnsmasq. This is in contrast with RFC5452, which specifies that the query name is one of the attributes of a query that must be used to match a reply. This flaw could be abused to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.

Inadequate Encryption Strength

Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F

CVE-2020-15897 7.5 - High - October 26, 2020

Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause traffic loss or incorrect forwarding of traffic via a malformed link-state PDU to the IS-IS router.

Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F

CVE-2020-17355 7.5 - High - October 21, 2020

Arista EOS before 4.21.12M, 4.22.x before 4.22.7M, 4.23.x before 4.23.5M, and 4.24.x before 4.24.2F allows remote attackers to cause a denial of service (restart of agents) by crafting a malformed DHCP packet which leads to an incorrect route being installed.

An issue was found in Arista EOS

CVE-2019-18948 7.5 - High - April 16, 2020

An issue was found in Arista EOS. Specific malformed ARP packets can impact the software forwarding of VxLAN packets. This issue is found in Aristas EOS VxLAN code, which can allow attackers to crash the VxlanSwFwd agent. This affects EOS 4.21.8M and below releases in the 4.21.x train, 4.22.3M and below releases in the 4.22.x train, 4.23.1F and below releases in the 4.23.x train, and all releases in 4.15, 4.16, 4.17, 4.18, 4.19, 4.20 code train.

Improper Input Validation

utility.c in telnetd in netkit telnet through 0.17

CVE-2020-10188 9.8 - Critical - March 06, 2020

utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions.

Classic Buffer Overflow

The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which

CVE-2015-6815 3.5 - Low - January 31, 2020

The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which allows attackers to cause a denial of service (infinite loop and guest crash) via unspecified vectors.

Infinite Loop

Integer overflow in the VNC display driver in QEMU before 2.1.0

CVE-2015-5239 6.5 - Medium - January 23, 2020

Integer overflow in the VNC display driver in QEMU before 2.1.0 allows attachers to cause a denial of service (process crash) via a CLIENT_CUT_TEXT message, which triggers an infinite loop.

Infinite Loop

Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0

CVE-2015-5745 6.5 - Medium - January 23, 2020

Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.

Classic Buffer Overflow

The ne2000_receive function in hw/net/ne2000.c in QEMU before 2.4.0.1

CVE-2015-5278 6.5 - Medium - January 23, 2020

The ne2000_receive function in hw/net/ne2000.c in QEMU before 2.4.0.1 allows attackers to cause a denial of service (infinite loop and instance crash) or possibly execute arbitrary code via vectors related to receiving packets.

Infinite Loop

Go before 1.12.11 and 1.3.x before 1.13.2 can panic upon an attempt to process network traffic containing an invalid DSA public key

CVE-2019-17596 7.5 - High - October 24, 2019

Go before 1.12.11 and 1.3.x before 1.13.2 can panic upon an attempt to process network traffic containing an invalid DSA public key. There are several attack scenarios, such as traffic from a client to a server that verifies client certificates.

Interpretation Conflict

Arista EOS through 4.21.0F

CVE-2018-14008 6.5 - Medium - August 15, 2019

Arista EOS through 4.21.0F allows a crash because 802.1x authentication is mishandled.

authentification

Arista EOS before 4.20.2F

CVE-2018-5254 7.5 - High - April 12, 2018

Arista EOS before 4.20.2F allows remote BGP peers to cause a denial of service (Rib agent restart) via a malformed path attribute in an UPDATE message.

Communication Channel Errors

The Mlag agent in Arista EOS 4.19 before 4.19.4M and 4.20 before 4.20.2F

CVE-2018-5255 6.5 - Medium - March 05, 2018

The Mlag agent in Arista EOS 4.19 before 4.19.4M and 4.20 before 4.20.2F allows remote attackers to cause a denial of service (agent restart) via crafted UDP packets.

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36

CVE-2017-18017 9.8 - Critical - January 03, 2018

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

Dangling pointer

Heap-based buffer overflow in dnsmasq before 2.78

CVE-2017-14491 9.8 - Critical - October 04, 2017

Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.

Memory Corruption

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which

CVE-2015-6855 7.5 - High - November 06, 2015

hw/ide/core.c in QEMU does not properly restrict the commands accepted by an ATAPI device, which allows guest users to cause a denial of service or possibly have unspecified other impact via certain IDE commands, as demonstrated by a WIN_READ_NATIVE_MAX command to an empty drive, which triggers a divide-by-zero error and instance crash.

Divide By Zero

The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might

CVE-2015-3214 - August 31, 2015

The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index.

Buffer Overflow

The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier

CVE-2015-5165 - August 12, 2015

The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to read process heap memory via unspecified vectors.

Use of Uninitialized Resource

Heap-based buffer overflow in the PCNET controller in QEMU

CVE-2015-3209 - June 15, 2015

Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitrary code by sending a packet with TXSTATUS_STARTPACKET set and then a crafted packet with TXSTATUS_DEVICEOWNS set.

Memory Corruption

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