Ubuntu 22.10: USN-5753-1 Moderate Snapd Privilege Escalation

ubuntu

December 1, 2022

snapd could be made to run programs as an administrator.

Summary

snapd could be made to run programs as an administrator.

Software Description:

- snapd: Daemon and tooling that enable snap packages

Details:

The Qualys Research Team discovered that a race condition existed in the

snapd snap-confine binary when preparing the private /tmp mount for a

snap. A local attacker could possibly use this issue to escalate privileges

and execute arbitrary code.

Topics Covered

security advisory moderate privilege escalation Ubuntu local attack snapd

Update Instructions

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

Ubuntu 22.10:
  snapd                           2.57.5+22.10ubuntu0.1

Ubuntu 22.04 LTS:
  snapd                           2.57.5+22.04ubuntu0.1

Ubuntu 20.04 LTS:
  snapd                           2.57.5+20.04ubuntu0.1

Ubuntu 18.04 LTS:
  snapd                           2.57.5+18.04ubuntu0.1

Ubuntu 16.04 ESM:
  snapd                           2.54.3+16.04.0ubuntu0.1~esm5

In general, a standard system update will make all the necessary changes.