Improper Certificate Validation Affecting software-properties package, versions <0.92.25debian1


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.14% (50th percentile)

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  • Snyk ID SNYK-DEBIAN10-SOFTWAREPROPERTIES-1048030
  • published 3 Dec 2020
  • disclosed 2 Dec 2020

How to fix?

Upgrade Debian:10 software-properties to version 0.92.25debian1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream software-properties package and not the software-properties package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
Expand this section

NVD

7.4 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    None