CVE-2024-36405

Name	CVE-2024-36405
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1073250

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
liboqs (PTS)	sid	0.8.0-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
liboqs	source	(unstable)	(unfixed)			1073250

Notes

https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-f2v9-5498-2vpp
https://github.com/open-quantum-safe/liboqs/commit/982c762c242ef549c914891b47bf6e0ed6321f91 (main)
https://github.com/open-quantum-safe/liboqs/commit/fbfac754585d788c19b49cac569e4e2ea182f579 (0.10.1-rc1)