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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| pyca | cryptography | >= 38.0.0, < 42.0.4 |
| cryptography_project | cryptography | >= 38.0.0, < 42.04 |
References
- https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55Patch
- https://github.com/pyca/cryptography/pull/10423Issue Tracking, Patch
- https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4Vendor Advisory
- https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55Patch
- https://github.com/pyca/cryptography/pull/10423Issue Tracking, Patch
- https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4Vendor Advisory
Timeline
- Published
- Feb 21, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed