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CVE-2024-36405

5.9 · MEDIUM

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms.

Published Jun 10, 2024CWE-208EPSS 0.52%

Overview

CVE-2024-36405 is a medium-severity vulnerability. It was published on June 10, 2024 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A control-flow timing lean has been identified in the reference implementation of the Kyber key encapsulation mechanism when it is compiled with Clang 15-18 for `-Os`, `-O1`, and other compilation options. A proof-of-concept local attack on the reference implementation leaks the entire ML-KEM 512 secret key in ~10 minutes using end-to-end decapsulation timing measurements. The issue has been fixed in version 0.10.1. As a possible workaround, some compiler options may produce vectorized code that does not leak secret information, however relying on these compiler options as a workaround may not be reliable.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/open-quantum-safe/liboqs/blob/7eecda6095c003ddded7175a1ffdf35a2ce63ed5/src/kem/kyber/pqcrystals-kyber_kyber512_ref/poly.c#L166GitHubgithub.com/open-quantum-safe/liboqs/commit/982c762c242ef549c914891b47bf6e0ed6321f91GitHubgithub.com/open-quantum-safe/liboqs/security/advisories/GHSA-f2v9-5498-2vppGitHubgithub.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6cGitHubgithub.com/open-quantum-safe/liboqs/blob/7eecda6095c003ddded7175a1ffdf35a2ce63ed5/src/kem/kyber/pqcrystals-kyber_kyber512_ref/poly.c#L166GitHubgithub.com/open-quantum-safe/liboqs/commit/982c762c242ef549c914891b47bf6e0ed6321f91GitHubgithub.com/open-quantum-safe/liboqs/security/advisories/GHSA-f2v9-5498-2vppGitHubgithub.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c

How CyberStrike helps

Frequently asked questions

What is CVE-2024-36405?

CVE-2024-36405 is a medium-severity vulnerability. It was published on June 10, 2024 and has a CVSS 3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2024-36405?

This vulnerability has a CVSS 3.1 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-36405?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-36405?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-36405 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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