VULNERABILITY INTELLIGENCE

CVE-2012-0955

CVSS score6.8 MEDIUM

EPSS probability0.61%

CISA KEVNot currently listed

Published2020-12-02

Last modified2026-06-16

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Description

software-properties was vulnerable to a person-in-the-middle attack due to incorrect TLS certificate validation in softwareproperties/ppa.py. software-properties didn't check TLS certificates under python2 and only checked certificates under python3 if a valid certificate bundle was provided. Fixed in software-properties version 0.92.

Weakness classification

CWE-295: Improper Certificate Validation

Primary references

security@ubuntu.com — Patch, Vendor Advisory
security@ubuntu.com — Exploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Vendor Advisory