PT-2022-2676 · Openssl+1 · Gost Engine+1

Beldmit · Published 2022-05-24 · Updated 2022-06-07 · CVE-2022-29242

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions GOST engine versions prior to 3.0.1

Description The issue is related to a buffer overflow vulnerability in the GOST engine, a reference implementation of the Russian GOST crypto algorithms for OpenSSL. This occurs when the ciphersuite TLS GOSTR341112 256 WITH KUZNYECHIK CTR OMAC is agreed upon and the server uses 512-bit GOST secret keys. The vulnerability can be exploited by a remote attacker to cause a buffer overflow. Disabling the ciphersuite TLS GOSTR341112 256 WITH KUZNYECHIK CTR OMAC is a possible workaround.

Recommendations For GOST engine versions prior to 3.0.1, update to version 3.0.1 to resolve the issue. As a temporary workaround, consider disabling the ciphersuite TLS GOSTR341112 256 WITH KUZNYECHIK CTR OMAC until a patch is applied.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2022-03165

CVE-2022-29242

GHSA-2RMW-8WPG-VGW5

Affected Products

Debian

Gost Engine

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29242.json · Exploit
• https://github.com/gost-engine/engine/commit/c6655a0b620a3e31f085cc906f8073fe81b2fad3 · Patch
• https://github.com/gost-engine/engine/commit/7df766124f87768b43b9e8947c5a01e17545772c · Patch
• https://github.com/gost-engine/engine/commit/b2b4d629f100eaee9f5942a106b1ccefe85b8808 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-29242 · Security Note
• https://osv.dev/vulnerability/CVE-2022-29242 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-03165 · Security Note
• https://ubuntu.com/security/CVE-2022-29242 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-29242 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-29242 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-29242 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-29242 · Security Note
• https://github.com/gost-engine/engine/releases/tag/v3.0.1 · Note
• https://github.com/gost-engine/engine/security/advisories/GHSA-2rmw-8wpg-vgw5 · Note
• https://t.me/cvenotify/30632 · Telegram Post