CVE-2022-29242
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.64% probability · 75th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- gost engine project/gost engine
- Source
- security-advisories@github.com
References
- https://github.com/gost-engine/engine/commit/7df766124f87768b43b9e8947c5a01e17545772cPatch, Third Party Advisory
- https://github.com/gost-engine/engine/commit/b2b4d629f100eaee9f5942a106b1ccefe85b8808Patch, Third Party Advisory
- https://github.com/gost-engine/engine/commit/c6655a0b620a3e31f085cc906f8073fe81b2fad3Patch, Third Party Advisory
- https://github.com/gost-engine/engine/releases/tag/v3.0.1Release Notes, Third Party Advisory
- https://github.com/gost-engine/engine/security/advisories/GHSA-2rmw-8wpg-vgw5Third Party Advisory
- https://github.com/gost-engine/engine/commit/7df766124f87768b43b9e8947c5a01e17545772cPatch, Third Party Advisory
- https://github.com/gost-engine/engine/commit/b2b4d629f100eaee9f5942a106b1ccefe85b8808Patch, Third Party Advisory
- https://github.com/gost-engine/engine/commit/c6655a0b620a3e31f085cc906f8073fe81b2fad3Patch, Third Party Advisory
- https://github.com/gost-engine/engine/releases/tag/v3.0.1Release Notes, Third Party Advisory
- https://github.com/gost-engine/engine/security/advisories/GHSA-2rmw-8wpg-vgw5Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.