Published: 24 September 2020

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.



CVSS 3 base score: 5.5


Package Release Status
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.10 (Groovy Gorilla)
Released (1.1.1+bzr982-0ubuntu34)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1.1.1+bzr982-0ubuntu32.2)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (1.1.1+bzr982-0ubuntu19.4)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (1.1.1+bzr982-0ubuntu14.4)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist