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USN-4980-1: polkit vulnerability

3 June 2021

The system could be made to run programs as an administrator.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • policykit-1 - framework for managing administrative policies and privileges

Details

Kevin Backhouse discovered that polkit incorrectly handled errors in the
polkit_system_bus_name_get_creds_sync function. A local attacker could
possibly use this issue to escalate privileges.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 21.04
Ubuntu 20.10
Ubuntu 20.04

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

References