GHSA-pj65-3pf6-c5q4 python-apt Does Not Check Hash Signature

• PyPI python-apt: < 0.8.3ubuntu7.5 → fixed in 0.8.3ubuntu7.5 • PyPI python-apt: >= 0.9.0, < 0.9.3.5ubuntu3 → fixed in 0.9.3.5ubuntu3 • PyPI python-apt: >= 1.2.0, < 1.6.5ubuntu0.1 → fixed in 1.6.5ubuntu0.1 • PyPI python-apt: >= 1.7.0, < 1.9.0ubuntu1.2 → fixed in 1.9.0ubuntu1.2 • PyPI python-apt: >= 1.9.1, < 1.9.5 → fixed in 1.9.5

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.