CVE-2012-0955

HighCVSS 7.4/10Last modified Jun 16, 2026

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.

Metrics

CVSS 3.1 7.4/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-295

Affected software

Vendor	Product	Versions
Canonical	software-properties	>= 0.92, < 0.92

References

https://code.launchpad.net/~cyphermox/software-properties/lp1036839/+merge/119753Patch, Vendor Advisory
https://launchpad.net/bugs/1036839Exploit, Vendor Advisory
https://code.launchpad.net/~cyphermox/software-properties/lp1036839/+merge/119753Patch, Vendor Advisory
https://launchpad.net/bugs/1036839Exploit, Vendor Advisory

Timeline

Published: Dec 2, 2020
Last modified: Jun 16, 2026
NVD status: Modified

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