Vulnerability · Published May 24, 2022 · Assigned by GitHub_M

CVE-2022-29242Buffer Overflow on creating key transport blob in GOST Engine

Medium 5.9

In plain English

A medium-severity buffer overflow in engine from gost-engine. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)1.7%top 22.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

GOST engine is a reference implementation of the Russian GOST crypto algorithms for OpenSSL. TLS clients using GOST engine when ciphersuite `TLS_GOSTR341112_256_WITH_KUZNYECHIK_CTR_OMAC` is agreed and the server uses 512 bit GOST secret keys are vulnerable to buffer overflow. GOST engine version 3.0.1 contains a patch for this issue. Disabling ciphersuite `TLS_GOSTR341112_256_WITH_KUZNYECHIK_CTR_OMAC` is a possible workaround.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	libengine-gost-openssl1.1	no fix listed	UBUNTU-CVE-2022-29242

Affected products (as reported)

Vendor	Product	Versions
gost-engine	engine	< 3.0.1

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/gost-engine/engine/security/advisories/GHSA-2rmw-8wpg-vgw5 x_refsource_CONFIRM
https://github.com/gost-engine/engine/commit/7df766124f87768b43b9e8947c5a01e17545772c x_refsource_MISC
https://github.com/gost-engine/engine/commit/b2b4d629f100eaee9f5942a106b1ccefe85b8808 x_refsource_MISC
https://github.com/gost-engine/engine/commit/c6655a0b620a3e31f085cc906f8073fe81b2fad3 x_refsource_MISC
https://github.com/gost-engine/engine/releases/tag/v3.0.1 x_refsource_MISC