| Name | CVE-2023-49083 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3922-1 |
| Debian Bugs | 1057108 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-cryptography (PTS) | jessie | 0.6.1-1+deb8u1 | fixed |
| stretch | 1.7.1-3+deb9u2 | fixed |
| buster, buster (lts) | 2.6.1-3+deb10u5 | fixed |
| buster (security) | 2.6.1-3+deb10u4 | fixed |
| bullseye | 3.3.2-1 | vulnerable |
| bullseye (security) | 3.3.2-1+deb11u1 | fixed |
| bookworm | 38.0.4-3+deb12u1 | fixed |
| bookworm (security) | 38.0.4-3~deb12u1 | vulnerable |
| sid, trixie | 43.0.0-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - python-cryptography <not-affected> (Vulnerable code introduced later)
https://github.com/pyca/cryptography/security/advisories/GHSA-jfhm-5ghh-2f97
https://github.com/pyca/cryptography/pull/9926
https://github.com/pyca/cryptography/commit/1e7b4d074e14c4e694d3ce69ad6754a6039fd6ff (42.0.0)
https://github.com/pyca/cryptography/commit/f09c261ca10a31fe41b1262306db7f8f1da0e48a (41.0.6)
[stretch] - python-cryptography <not-affected> (Vulnerable code introduced later)
[jessie] - python-cryptography <not-affected> (Vulnerable code introduced later)