NULL pointer dereference in Cryptography.io Cryptography
CVE-2024-26130
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.
EPSS: 0.008 (55.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cryptography.io Cryptography
- Pyca Cryptography — versions >= 38.0.0, < 42.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2024-26130?
- CVE-2024-26130 is a high-severity vulnerability in Cryptography.io Cryptography, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2024-02-21.
- How severe is CVE-2024-26130?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-26130 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.