NULL pointer dereference in Pyca Cryptography
CVE-2023-49083
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitat…
EPSS: 0.013 (79.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Pyca Cryptography — versions >= 3.1, < 41.0.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97 (x_refsource_CONFIRM)
- https://github.com/pyca/cryptography/pull/9926 (x_refsource_MISC)
- https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a (x_refsource_MISC)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
Frequently asked questions
- What is CVE-2023-49083?
- CVE-2023-49083 is a medium-severity vulnerability in Pyca Cryptography, classified under NULL Pointer Dereference. CVSS score: 5.9/10. Published 2023-11-29.
- How severe is CVE-2023-49083?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2023-49083 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.