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CVE-2024-37880

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published6/10/2024

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

pq-crystals:kyber

Weaknesses (CWE)

CWE-203CWE-203

References

https://github.com/antoonpurnal/clangover(cve@mitre.org)

https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c(cve@mitre.org)

https://news.ycombinator.com/item?id=40577486(cve@mitre.org)

https://pqshield.com/pqshield-plugs-timing-leaks-in-kyber-ml-kem-to-improve-pqc-implementation-maturity/(cve@mitre.org)

https://twitter.com/purnaltoon/status/1797644696568959476(cve@mitre.org)

https://github.com/antoonpurnal/clangover(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c(af854a3a-2127-422b-91ae-364da2661108)

https://news.ycombinator.com/item?id=40577486(af854a3a-2127-422b-91ae-364da2661108)

https://pqshield.com/pqshield-plugs-timing-leaks-in-kyber-ml-kem-to-improve-pqc-implementation-maturity/(af854a3a-2127-422b-91ae-364da2661108)

https://twitter.com/purnaltoon/status/1797644696568959476(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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