Vulnerability · Published Dec 6, 2024 · Assigned by GitHub_M

CVE-2024-54137liboqs has a correctness error in HQC decapsulation

High 7.4

In plain English

A high-severity information exposure in liboqs from open-quantum-safe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.4%top 65.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A correctness error has been identified in the reference implementation of the HQC key encapsulation mechanism. Due to an indexing error, part of the secret key is incorrectly treated as non-secret data. This results in an incorrect shared secret value being returned when the decapsulation function is called with a malformed ciphertext. This vulnerability is fixed in 0.12.0.

Affected products (as reported)

Vendor	Product	Versions
open-quantum-safe	liboqs	< 0.12.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-gpf4-vrrw-r8v7 x_refsource_CONFIRM
https://github.com/open-quantum-safe/liboqs/commit/cce1bfde4e52c524b087b9687020d283fbde0f24 x_refsource_MISC