CVE-2024-26130
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
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.
How to fix CVE-2024-26130
To remediate CVE-2024-26130, upgrade the affected package to a fixed version below.
- —upgrade to 38.0.4-3+deb12u1 or later
- —upgrade to 42.0.4 or later
- —upgrade to 97d231672763cdb5959a3b191e692a362f1b9e55 or later
Is CVE-2024-26130 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 38.0.4-3+deb12u1
- >= 38.0.0, < 42.0.4
- from 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 |