Gnupg

GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached

CVE-2022-3219 3.3 - Low - February 23, 2023

GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.

Memory Corruption

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser

CVE-2022-3515 9.8 - Critical - January 12, 2023

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment.

Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.

CVE-2022-47629 9.8 - Critical - December 20, 2022

Libksba before 1.6.3 is prone to an integer overflow vulnerability in the CRL signature parser.

Integer Overflow or Wraparound

GnuPG through 2.3.6, in unusual situations where an attacker possesses any secret-key information

CVE-2022-34903 6.5 - Medium - July 01, 2022

GnuPG through 2.3.6, in unusual situations where an attacker possesses any secret-key information from a victim's keyring and other constraints (e.g., use of GPGME) are met, allows signature forgery via injection into the status line.

Injection

The ElGamal implementation in Libgcrypt before 1.9.4

CVE-2021-40528 5.9 - Medium - September 06, 2021

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

Use of a Broken or Risky Cryptographic Algorithm

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption

CVE-2021-33560 7.5 - High - June 08, 2021

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

Side Channel Attack

_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value

CVE-2021-3345 7.8 - High - January 29, 2021

_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.

Memory Corruption

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm

CVE-2019-14855 7.5 - High - March 20, 2020

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

Inadequate Encryption Strength

The proglottis Go wrapper before 0.1.1 for the GPGME library has a use-after-free

CVE-2020-8945 7.5 - High - February 12, 2020

The proglottis Go wrapper before 0.1.1 for the GPGME library has a use-after-free, as demonstrated by use for container image pulls by Docker or CRI-O. This leads to a crash or potential code execution during GPG signature verification.

Dangling pointer

Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network

CVE-2019-13050 7.5 - High - June 29, 2019

Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.

Improper Certificate Validation

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack

CVE-2019-12904 5.9 - Medium - June 20, 2019

In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack

Exposure of Resource to Wrong Sphere

GnuPG version 2.1.12 - 2.2.11 contains a Cross ite Request Forgery (CSRF) vulnerability in dirmngr

CVE-2018-1000858 8.8 - High - December 20, 2018

GnuPG version 2.1.12 - 2.2.11 contains a Cross ite Request Forgery (CSRF) vulnerability in dirmngr that can result in Attacker controlled CSRF, Information Disclosure, DoS. This attack appear to be exploitable via Victim must perform a WKD request, e.g. enter an email address in the composer window of Thunderbird/Enigmail. This vulnerability appears to have been fixed in after commit 4a4bb874f63741026bd26264c43bb32b1099f060.

Session Riding

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures

CVE-2018-0495 4.7 - Medium - June 13, 2018

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Side Channel Attack

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output

CVE-2018-12020 7.5 - High - June 08, 2018

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes.

Use of Incorrectly-Resolved Name or Reference

GnuPG 2.2.4 and 2.2.5 does not enforce a configuration in which key certification requires an offline master Certify key, which results in apparently valid certifications

CVE-2018-9234 7.5 - High - April 04, 2018

GnuPG 2.2.4 and 2.2.5 does not enforce a configuration in which key certification requires an offline master Certify key, which results in apparently valid certifications that occurred only with access to a signing subkey.

Key Management Errors

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which

CVE-2018-6829 7.5 - High - February 07, 2018

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.

Use of a Broken or Risky Cryptographic Algorithm

Libksba before 1.3.4

CVE-2016-4579 7.5 - High - June 13, 2016

Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via unspecified vectors, related to the "returned length of the object from _ksba_ber_parse_tl."

Improper Input Validation

Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4

CVE-2016-4574 7.5 - High - June 13, 2016

Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356.

Numeric Errors

The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3

CVE-2016-4356 7.5 - High - June 13, 2016

The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.

Buffer Overflow

Multiple integer overflows in ber-decoder.c in Libksba before 1.3.3

CVE-2016-4355 7.5 - High - June 13, 2016

Multiple integer overflows in ber-decoder.c in Libksba before 1.3.3 allow remote attackers to cause a denial of service (crash) via crafted BER data, which leads to a buffer overflow.

Buffer Overflow

ber-decoder.c in Libksba before 1.3.3 uses an incorrect integer data type, which

CVE-2016-4354 7.5 - High - June 13, 2016

ber-decoder.c in Libksba before 1.3.3 uses an incorrect integer data type, which allows remote attackers to cause a denial of service (crash) via crafted BER data, which leads to a buffer overflow.

Buffer Overflow

ber-decoder.c in Libksba before 1.3.3 does not properly handle decoder stack overflows, which

CVE-2016-4353 7.5 - High - June 13, 2016

ber-decoder.c in Libksba before 1.3.3 does not properly handle decoder stack overflows, which allows remote attackers to cause a denial of service (abort) via crafted BER data.

Improper Input Validation

Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG

CVE-2014-9087 - December 01, 2014

Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of service (crash) via a crafted OID in a (1) S/MIME message or (2) ECC based OpenPGP data, which triggers a buffer overflow.

Integer underflow

The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when importing a key

CVE-2012-6085 - January 24, 2013

The read_block function in g10/import.c in GnuPG 1.4.x before 1.4.13 and 2.0.x through 2.0.19, when importing a key, allows remote attackers to corrupt the public keyring database or cause a denial of service (application crash) via a crafted length field of an OpenPGP packet.

Improper Input Validation

Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16

CVE-2010-2547 8.1 - High - August 05, 2010

Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.

Dangling pointer