Buffer Overflow on creating key transport blob in GOST Engine
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| gost-engine | engine | before 3.0.1 | 3.0.1 | Patch available | CNA |
- engine Vendorgost-engine Affected before 3.0.1 Fixed in 3.0.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gost_engine_project:gost_engine:*:*:*:*:*:*:*:* | before 3.0.1 | Vulnerable | Gost Engine Project |
- cpe:2.3:a:gost_engine_project:gost_engine:*:*:*:*:*:*:*:* Versions before 3.0.1 Vulnerable ·Gost Engine Project
Remediation
- Fix · CNA engine (gost-engine) Fixed in 3.0.1
Timeline
- 2026-10-02 Threatist record created from CVE-2022-29242
References
Patch 3
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences