CVE-2012-0955

software-properties incorrectly validated TLS certificates

HIGH
7.4
CVSS Score
Published: December 2, 2020 at 12:50 AM UTC
Updated: June 16, 2026 at 11:38 PM UTC
1 product affected across 1 vendorSoftware Properties

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Severity
HIGH7.4
Exploit prediction
EPSS 0.6%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.92
Affected range stops below 0.92, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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