CVE-2019-15796

MEDIUM4.7EPSS 0.17%

python-apt Does Not Check Hash Signature

Published: 5/24/2022Modified: 4/28/2026

Also known as:DEBIAN-CVE-2019-15796

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.

Affected packages (2)

Debian/python-aptfrom 0, < 1.8.5
PyPI/python-aptfrom 0, < 0.8.3ubuntu7.5

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM4.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References (5)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2019-15796
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2019-15796
PATCHhttps://github.com/excid3/python-apt
WEBhttps://usn.ubuntu.com/4247-1
WEBhttps://usn.ubuntu.com/4247-3