PT-2020-7174 · Unknown · Software Properties

Marc Deslauriers + 1 · Published 2020-12-02 · Updated 2020-12-08 · CVE-2012-0955

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions software-properties versions prior to 0.92

Description The issue is related to a person-in-the-middle attack due to incorrect TLS certificate validation in softwareproperties/ppa.py. The software didn't check TLS certificates under python2 and only checked certificates under python3 if a valid certificate bundle was provided.

Recommendations For software-properties versions prior to 0.92, update to version 0.92 to resolve the issue. As a temporary workaround, consider disabling the use of TLS connections or ensuring a valid certificate bundle is provided when using python3 until the update is applied. Restrict access to the softwareproperties/ppa.py module to minimize the risk of exploitation.

Exploit

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2012-0955

Affected Products

Software Properties

References · 8

• 🔥 https://launchpad.net/bugs/1036839 · Exploit
• https://osv.dev/vulnerability/CVE-2012-0955 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2012-0955 · Security Note
• https://code.launchpad.net/~cyphermox/software-properties/lp1036839/+merge/119753 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2012-0955 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2012-0955 · Vendor Advisory
• https://t.me/cvenotify/6415 · Telegram Post
• https://t.me/cvenotify/6434 · Telegram Post