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.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4
Issue Tracking, Patch x_refsource_misc
https://github.com/pyca/cryptography/pull/10423
Scores
CVSS v3
7.5
EPSS
0.0044
EPSS Percentile
63.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (2)
cryptography.io/cryptography
38.0.0 - 42.0.4
pypi/cryptography
38.0.0 - 42.0.4PyPI
Published
Feb 21, 2024
Tracked Since
Feb 18, 2026