CVE-2019-15796

MEDIUM

python-apt <= 1.9.3ubuntu2 - Improper Authentication in Version Hash Validation

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Patch, Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4247-1/
Patch, Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4247-3/

Scores

CVSS v3 4.7
EPSS 0.0050
EPSS Percentile 38.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-287 CWE-347
Status published
Products (17)
debian/python-apt 1.8.4
pypi/python-apt 0 - 0.8.3ubuntu7.5PyPI
ubuntu/python-apt 0.8.0 ubuntu9
ubuntu/python-apt 0.8.1 ubuntu1
ubuntu/python-apt 0.8.3 ubuntu1 (10 CPE variants)
ubuntu/python-apt 0.8.9.1 (2 CPE variants)
ubuntu/python-apt 0.9.0
ubuntu/python-apt 0.9.1 (4 CPE variants)
ubuntu/python-apt 0.9.3.1
ubuntu/python-apt 0.9.3.2 (3 CPE variants)
... and 7 more
Published Mar 26, 2020
Tracked Since Feb 18, 2026