| Package | Affected versions | Patched versions |
|---|---|---|
| software-properties | ≤ 0.81.13.1 |
ppa.py in Software Properties before 0.81.13.3 does not validate the server certificate when downloading PPA GPG key fingerprints, which allows man-in-the-middle (MITM) attackers to spoof GPG keys for a package repository.
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