CVE-2019-15796

NameCVE-2019-15796
DescriptionPython-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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2074-1, DSA-4609-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-apt (PTS)jessie, jessie (lts)0.9.3.14fixed
stretch (security), stretch (lts), stretch1.4.3fixed
buster, buster (security)1.8.4.3fixed
bullseye2.2.1fixed
bookworm2.6.0fixed
sid, trixie2.8.0fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python-aptsourcewheezy(unfixed)end-of-life
python-aptsourcejessie0.9.3.13DLA-2074-1
python-aptsourcestretch1.4.1DSA-4609-1
python-aptsourcebuster1.8.4.1DSA-4609-1
python-aptsource(unstable)1.8.5

Notes

https://salsa.debian.org/apt-team/python-apt/commit/b4eef110b7ba4fb21cc0dd92585756f50e0100c9 (1.8.5)
https://salsa.debian.org/apt-team/python-apt/commit/e3321eb9792bf3b4cace4cee47dc6da00fbee929 (1.8.5)

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