CVE-2019-15796

python-apt downloads from untrusted sources

State: Published
Severity: 4.7 Medium
Published: Mar 26, 2020
Updated: Sep 16, 2024
Reserved: Aug 29, 2019

Description

Python-apt doesn't check if hashes are signed in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py or in `_fetch_archives()` of apt/cache.py in version 1.9.3ubuntu2 and earlier. This allows downloads from unsigned repositories which shouldn't be allowed and has been fixed in verisions 1.9.5, 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5.

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N	canonical

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
Python-aptCanonical	0.8.3 to before 0.8.3ubuntu7.5Affected 0.9.3.5 to before 0.9.3.5ubuntu3+esm2Affected 1.1.0 to before 1.1.0~beta1ubuntu0.16.04.7Affected 1.6.5 to before 1.6.5ubuntu0.1Affected 1.9.0 to before 1.9.0ubuntu1.2Affected 1.9.5 to before 1.9.5Affected

References

https://usn.ubuntu.com/4247-1/vendor-advisory
https://usn.ubuntu.com/4247-3/vendor-advisory

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