vulnerability
Ubuntu: USN-6539-1 (CVE-2023-49083): python-cryptography vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:N/A:C) | Nov 29, 2023 | Dec 7, 2023 | Apr 16, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
Nov 29, 2023
Added
Dec 7, 2023
Modified
Apr 16, 2026
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.
Solutions
ubuntu-upgrade-python-cryptographyubuntu-upgrade-python3-cryptography
Rapid7 Labs
2026 Global Threat Landscape Report
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