VDB
PYSEC-2023-254
PYSEC-2023-254
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| PyPI | cryptography | 0, 3.2.1, 3.3.1 |
Timeline
- Nov 29, 2023 CVE Published
- Feb 17, 2024 CVE Updated
References
- https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97 advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMNTYMUGFJSDBYBU22FUYBHFRZODRKXV/ url
- https://github.com/pyca/cryptography/pull/9926 fix
- https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a fix