CVE-2024-26130

Description

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Starting in version 38.0.0 and prior to version 42.0.4, if `pkcs12.serialize_key_and_certificates` is called with both a certificate whose public key did not match the provided private key and 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 in version 42.0.4, the first version in which a `ValueError` is properly raised.

CVSS Metrics

• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.44%• Percentile: 63%

Techniques & Countermeasures

• CWE-476•NULL Pointer Dereference

  The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

• cryptography.io•cryptography

  ≥ 38.0.0, < 42.0.4

• pyca•cryptography

  ≥ 38.0.0, < 42.0.4

• PyPI•cryptography

  ≥ 38.0.0, < 42.0.4 | < 97d231672763cdb5959a3b191e692a362f1b9e55

References (6)

• https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4
• https://github.com/pyca/cryptography/pull/10423
• https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55
• https://nvd.nist.gov/vuln/detail/CVE-2024-26130
• https://github.com/pyca/cryptography
• https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2024-225.yaml