CVE-2024-37880

Published Jun 10, 2024

Last updated 3 months ago

Overview

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.
Source: cve@mitre.org
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: HIGH

Weaknesses

nvd@nist.gov: CWE-203
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-203

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:pq-crystals:kyber:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "346EEBCC-A9CB-4394-BB8B-9E741FB4331F",
            "versionEndExcluding": "2024-06-03"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References