USN-4538-1: PackageKit vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• packagekit - Provides a package management service

Details

Vaisha Bernard discovered that PackageKit incorrectly handled certain
methods. A local attacker could use this issue to learn the MIME type of
any file on the system. (CVE-2020-16121)

Sami Niemimäki discovered that PackageKit incorrectly handled local deb
packages. A local user could possibly use this issue to install untrusted
packages, contrary to expectations. (CVE-2020-16122)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04

• packagekit - 1.1.13-2ubuntu1.1

Ubuntu 18.04

• packagekit - 1.1.9-1ubuntu2.18.04.6

Ubuntu 16.04

• packagekit - 0.8.17-4ubuntu6~gcc5.4ubuntu1.5

After a standard system update you need to reboot your computer to make all
the necessary changes.

References

• CVE-2020-16121
• CVE-2020-16122