CVE-2024-37880

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/antoonpurnal/clangover	Exploit
https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c	Patch
https://news.ycombinator.com/item?id=40577486	Not Applicable
https://pqshield.com/pqshield-plugs-timing-leaks-in-kyber-ml-kem-to-improve-pqc-implementation-maturity/	Exploit Third Party Advisory
https://twitter.com/purnaltoon/status/1797644696568959476	Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:pq-crystals:kyber:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-06-10 02:15

Updated : 2024-06-12 16:30

NVD link : CVE-2024-37880

Mitre link : CVE-2024-37880

CVE.ORG link : CVE-2024-37880

JSON object : View

Products Affected

pq-crystals

kyber

CWE

CWE-203

Observable Discrepancy

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7.5 /10