CVE-2024-26130
HIGH7.5EPSS 0.44%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
Published: 2/21/2024Modified: 2/4/2026
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
Affected packages (3)
- Debian/python-cryptographyfrom 0, < 38.0.4-3+deb12u1
- PyPI/cryptography>= 38.0.0, < 42.0.4
- PyPI/cryptographyfrom 0, < 97d231672763cdb5959a3b191e692a362f1b9e55, < 97d231672763cdb5959a3b191e692a362f1b9e55 | >= 38.0.0, < 42.0.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2024-26130
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-26130
- PATCHhttps://github.com/pyca/cryptography
- WEBhttps://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55
- WEBhttps://github.com/pyca/cryptography/pull/10423
- WEBhttps://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2024-225.yaml