In short
- CVE-2024-26130 is a HIGH (CVSS 7.5) vulnerability affecting cryptography, cryptography (cryptography.io).
- Chance of exploitation in the next 30 days (EPSS): 0.83%, higher than 57.6% of all vulnerabilities.
- Fix: update to 42.0.4 or later.
Description
If pkcs12.serialize_key_and_certificates is called with both:
- A certificate whose public key did not match the provided private key
- 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
NVD 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.
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