USN-6539-1
Advisory lineage Upstream: 4 Downstream: 0
Published: 06 Dec 2023, 15:22
Last modified:27 Apr 2026, 17:17
Vulnerability Summary
Overall Risk (default)
minimal
0/100 CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected
Timeline
06 Dec 2023, 15:22
Published
Vulnerability first disclosed
27 Apr 2026, 17:17
Last Modified
Vulnerability information updated
Description
python-cryptography vulnerabilities It was discovered that the python-cryptography Cipher.update_into function would incorrectly accept objects with immutable buffers. This would result in corrupted output, contrary to expectations. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-23931) It was dicovered that python-cryptography incorrectly handled loading certain PKCS7 certificates. A remote attacker could possibly use this issue to cause python-cryptography to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 23.04, and Ubuntu 23.10. (CVE-2023-49083)
Affected Systems
- ubuntu•python-cryptography
< 2.8-3ubuntu0.2 | < 3.4.8-1ubuntu2.1