CVE-2024-14041 (GCVE-0-2024-14041)
Vulnerability from cvelistv5
Published
2026-07-28 08:05
Modified
2026-08-09 20:56
Severity ?
8.2 (High) - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/U:Amber
CWE
  • CWE-208 - Observable Timing Discrepancy
Summary
In Bouncy Castle for Java from 1.73 to before 1.78, three ML-KEM (CRYSTALS-Kyber) routines divided secret-derived polynomial coefficients by the modulus q: Poly.toMsg, which decodes the decrypted message, and the ciphertext compression routines Poly.compressPoly and PolyVec.compressPolyVec. An attacker able to measure the timing of a large number of decapsulations performed with the same long-term private key can recover that key. These are the KyberSlash1 (Poly.toMsg) and KyberSlash2 (ciphertext compression) divisions. Compression performed during encapsulation operates on values that become the public ciphertext and is not affected.
References
Impacted products
Vendor Product Version
Legion of the Bouncy Castle Inc. BC-JAVA Version: 1.73
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