GitHub Advisoryadvisory · PyPI

GHSA-6vqw-3v5j-54x4 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

HIGH Published 2024-02-21 Modified 2025-02-06 Official page ↗
Aliases
CVE-2024-26130
Ecosystem
PyPI
Packages
cryptography
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476
Reviewed
2024-02-21

Affected packages

• PyPI cryptography: >= 38.0.0, < 42.0.4 → fixed in 42.0.4

Description

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

Related

Alias · CVE (1)

  • CVE-2024-26130 cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. vulnerability

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References