GHSA-6VQW-3V5J-54X4

Vulnerability from github – Published: 2024-02-21 18:04 – Updated: 2025-02-06 18:07
VLAI
Summary
cryptography NULL pointer dereference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override
Details

If pkcs12.serialize_key_and_certificates is called with both:

  1. A certificate whose public key did not match the provided private key
  2. An encryption_algorithm with hmac_hash set (via PrivateFormat.PKCS12.encryption_builder().hmac_hash(...)

Then a NULL pointer dereference would occur, crashing the Python process.

This has been resolved, and now a ValueError is properly raised.

Patched in https://github.com/pyca/cryptography/pull/10423

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "cryptography"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "38.0.0"
            },
            {
              "fixed": "42.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-26130"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-21T18:04:40Z",
    "nvd_published_at": "2024-02-21T17:15:09Z",
    "severity": "HIGH"
  },
  "details": "If `pkcs12.serialize_key_and_certificates` is called with both:\n\n1. A certificate whose public key did not match the provided private key\n2. An `encryption_algorithm` with `hmac_hash` set (via `PrivateFormat.PKCS12.encryption_builder().hmac_hash(...)`\n\nThen a NULL pointer dereference would occur, crashing the Python process.\n\nThis has been resolved, and now a `ValueError` is properly raised.\n\nPatched in https://github.com/pyca/cryptography/pull/10423",
  "id": "GHSA-6vqw-3v5j-54x4",
  "modified": "2025-02-06T18:07:25Z",
  "published": "2024-02-21T18:04:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26130"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/pull/10423"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pyca/cryptography"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2024-225.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "cryptography NULL pointer dereference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override"
}



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