CVE-2019-15796
lowpriority · track · 19EPSS 0.005 · 43 %ileEURUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.6–4.7
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (51)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-pj65-3pf6-c5q4python-apt Does Not Check Hash Signature2022-05-24ghsa · osvUS
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.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (12)
External citations — patches, advisories, analysis.
- https://lists.debian.org/debian-security-announce/2020/msg00012.htmlcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-15796cnnvd
- https://packetstormsecurity.com/files/156080/Debian-Security-Advisory-4609-1.htmlcnnvd
- https://salsa.debian.org/apt-team/python-apt/commit/b4eef110b7ba4fb21cc0dd92585756f50e0100c9Patchcnnvd
- https://usn.ubuntu.com/4247-1/cnnvd
- https://usn.ubuntu.com/4247-3/cnnvd
- https://vigilance.fr/vulnerability/python-apt-code-execution-via-Untrusted-Repositories-31419cnnvd
- https://www.auscert.org.au/bulletins/ESB-2020.0263/cnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan