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.

Reserved 2024-05-27 | Published 2024-06-10 | Updated 2024-08-02 | Assigner GitHub_M

Problem types

CWE-208: Observable Timing Discrepancy

CWE-385: Covert Timing Channel

Product status

< 0.10.1
affected

References

github.com/...liboqs/security/advisories/GHSA-f2v9-5498-2vpp

github.com/...ommit/982c762c242ef549c914891b47bf6e0ed6321f91

github.com/...ommit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c

github.com/...kem/kyber/pqcrystals-kyber_kyber512_ref/poly.c

cve.org (CVE-2024-36405)

nvd.nist.gov (CVE-2024-36405)

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