UBUNTU-CVE-2023-49083

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2023-49083
Downstream
USN-6539-1
Published: 04 Dec 2023, 00:00
Last modified:04 Feb 2026, 03:48

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Dec 2023, 00:00
Published
Vulnerability first disclosed
04 Feb 2026, 03:48
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • ubuntu•python-cryptography

    < 3.4.8-1ubuntu2.1

References (5)