Description
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. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| pyca | cryptography | >= 3.1, < 41.0.6 |
References
- https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48aPatch
- https://github.com/pyca/cryptography/pull/9926Issue Tracking, Patch
- https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97Exploit, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/
- https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48aPatch
- https://github.com/pyca/cryptography/pull/9926Issue Tracking, Patch
- https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97Exploit, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/
Timeline
- Published
- Nov 29, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified