CVE-2022-29242

low-risk
Published 2022-05-24

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.

Do I need to act?

~
1.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Gost Engine

Affected Vendors

Gost Engine Project

References (10)

Patch https://github.com/gost-engine/engine/commit/7df766124f87768b43b9e8947c5a01e1754...
Patch https://github.com/gost-engine/engine/commit/b2b4d629f100eaee9f5942a106b1ccefe85...
Patch https://github.com/gost-engine/engine/commit/c6655a0b620a3e31f085cc906f8073fe81b...
Release Notes https://github.com/gost-engine/engine/releases/tag/v3.0.1
Third Party Advisory https://github.com/gost-engine/engine/security/advisories/GHSA-2rmw-8wpg-vgw5
Patch https://github.com/gost-engine/engine/commit/7df766124f87768b43b9e8947c5a01e1754...
Patch https://github.com/gost-engine/engine/commit/b2b4d629f100eaee9f5942a106b1ccefe85...
Patch https://github.com/gost-engine/engine/commit/c6655a0b620a3e31f085cc906f8073fe81b...
Release Notes https://github.com/gost-engine/engine/releases/tag/v3.0.1
Third Party Advisory https://github.com/gost-engine/engine/security/advisories/GHSA-2rmw-8wpg-vgw5
26
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 3/34 · Minimal
Exposure 5/34 · Minimal