CVE-2024-26130

cryptography NULL pointer deference 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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.35%
Vendor Advisory github.com
Affected: pyca cryptography
Published at:
Updated at:

References

Link Tags
https://github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4 vendor advisory
https://github.com/pyca/cryptography/pull/10423 patch issue tracking
https://github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55 patch

Frequently Asked Questions

What is the severity of CVE-2024-26130?
CVE-2024-26130 has been scored as a high severity vulnerability.
How to fix CVE-2024-26130?
To fix CVE-2024-26130, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-26130 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-26130 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-26130?
CVE-2024-26130 affects pyca cryptography.
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