CVE-2024-37880

June 10, 2024, 2:52 a.m.

None
No Score

Description

The Kyber reference implementation before 9b8d306, when compiled by LLVM Clang through 18.x with some common optimization options, has a timing side channel that allows attackers to recover an ML-KEM 512 secret key in minutes. This occurs because poly_frommsg in poly.c does not prevent Clang from emitting a vulnerable secret-dependent branch.

Product(s) Impacted

Product Versions
Kyber reference implementation
  • ['before 9b8d306']

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://github.com/antoonpurnal/clangover
https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c
https://news.ycombinator.com/item?id=40577486
https://pqshield.com/pqshield-plugs-timing-leaks-in-kyber-ml-kem-to-improve-pqc-implementation-maturity/
https://twitter.com/purnaltoon/status/1797644696568959476

Tags

cve@mitre.org
2024-06-10
CVE-2024-37880

Timeline

Published: June 10, 2024, 2:15 a.m.
Last Modified: June 10, 2024, 2:52 a.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

cve@mitre.org

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.