aptdaemon: There is no input validation on the Locale property in an apt transaction
CVE-2020-15703 is fixed in 7 products on 1 platform, first by aptdaemon 1.1.1+bzr982-0ubuntu19.4, released September 23, 2020. It is not reported as exploited. Patch Radar priority: Routine.
There is no input validation on the Locale property in an apt transaction. An unprivileged user can supply a full path to a writable directory, which lets aptd read a file as root. Having a symlink in place results in an error message if the file exists, and no error otherwise. This way an unprivileged user can check for the existence of any files on the system as root.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| aptdaemon · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | aptdaemon 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| aptdaemon · Ubuntu 20.04 LTS (focal) | 1.1.1+bzr982-0ubuntu32.2 | aptdaemon 1.1.1+bzr982-0ubuntu32.2 | Sep 23, 2020 |
| aptdaemon-data · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | aptdaemon-data 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| aptdaemon-data · Ubuntu 20.04 LTS (focal) | 1.1.1+bzr982-0ubuntu32.2 | aptdaemon-data 1.1.1+bzr982-0ubuntu32.2 | Sep 23, 2020 |
| python-aptdaemon · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | python-aptdaemon 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| python-aptdaemon.gtk3widgets · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | python-aptdaemon.gtk3widgets 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| python3-aptdaemon · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | python3-aptdaemon 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| python3-aptdaemon · Ubuntu 20.04 LTS (focal) | 1.1.1+bzr982-0ubuntu32.2 | python3-aptdaemon 1.1.1+bzr982-0ubuntu32.2 | Sep 23, 2020 |
| python3-aptdaemon.gtk3widgets · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | python3-aptdaemon.gtk3widgets 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| python3-aptdaemon.gtk3widgets · Ubuntu 20.04 LTS (focal) | 1.1.1+bzr982-0ubuntu32.2 | python3-aptdaemon.gtk3widgets 1.1.1+bzr982-0ubuntu32.2 | Sep 23, 2020 |
| python3-aptdaemon.test · Ubuntu 18.04.6 LTS (bionic) | 1.1.1+bzr982-0ubuntu19.4 | python3-aptdaemon.test 1.1.1+bzr982-0ubuntu19.4 | Sep 23, 2020 |
| python3-aptdaemon.test · Ubuntu 20.04 LTS (focal) | 1.1.1+bzr982-0ubuntu32.2 | python3-aptdaemon.test 1.1.1+bzr982-0ubuntu32.2 | Sep 23, 2020 |
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