python-apt only checks the MD5 sums of downloaded files in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py in version 1.9.0ubuntu1 and earlier. This allows a man-in-the-middle attack which could potentially be used to install altered packages and has been fixed in versions 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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade python-apt | Jan 27, 2020 | Jan 27, 2020 |
| Ubuntu | — | Upgrade python3-aptUpgrade python-aptUpgrade python3-apt (Ubuntu Pro)Upgrade python-apt (Ubuntu Pro) | Jan 23, 2020 | Jan 22, 2020 |
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