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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (56.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Cryptography.io Cryptography
- Pyca Cryptography — versions >= 38.0.0, < 42.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/pyca/cryptography/security/advisories/GHSA-6vqw-3v5j-54x4 (Vendor Advisory)
- github.com/pyca/cryptography/pull/10423 (Patch, Issue Tracking)
- github.com/pyca/cryptography/commit/97d231672763cdb5959a3b191e692a362f1b9e55 (Patch)
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.