1. Ubuntu Security Notices
  2. USN-4980-1

USN-4980-1: polkit vulnerability

Publication date

3 June 2021

Overview

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

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
21.04 hirsute libpolkit-agent-1-0 –  0.105-30ubuntu0.1
libpolkit-gobject-1-0 –  0.105-30ubuntu0.1
policykit-1 –  0.105-30ubuntu0.1
20.10 groovy libpolkit-agent-1-0 –  0.105-29ubuntu0.1
libpolkit-gobject-1-0 –  0.105-29ubuntu0.1
policykit-1 –  0.105-29ubuntu0.1
20.04 focal libpolkit-agent-1-0 –  0.105-26ubuntu1.1
libpolkit-gobject-1-0 –  0.105-26ubuntu1.1
policykit-1 –  0.105-26ubuntu1.1

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References

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