CVE-2022-29242 Buffer Overflow on creating key transport blob in GOST Engine
A buffer overflow in the GOST engine allows attackers to execute code or cause denial of service when specific ciphersuites and key sizes are used.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-29242?
CVE-2022-29242 is a medium-severity memory corruption vulnerability in gost-engine engine, published on 24 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-120
Which versions are affected by CVE-2022-29242?
It affects 1 product.
Products include Gost Engine Project Gost Engine.
How do I fix CVE-2022-29242?
No fix has been published for CVE-2022-29242 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-29242 being exploited?
There is no known exploitation of CVE-2022-29242 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-29242, GHSA-2rmw-8wpg-vgw5, UBUNTU-CVE-2022-29242.