Ubuntu 22.04 LTS: USN-5395-1 Critical Networkd-Dispatcher Escalation

ubuntu

April 28, 2022

Several security issues were fixed in networkd-dispatcher.

Summary

Several security issues were fixed in networkd-dispatcher.

Software Description:

- networkd-dispatcher: Dispatcher service for systemd-networkd

connection status changes

Details:

It was discovered that networkd-dispatcher incorrectly handled internal

scripts. A local attacker could possibly use this issue to cause a race

condition, escalate privileges and execute arbitrary code.

(CVE-2022-29799, CVE-2022-29800)

Topics Covered

security advisory critical privilege escalation local exploit system update ubuntu networkd-dispatcher

Update Instructions

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

Ubuntu 22.04 LTS:
   networkd-dispatcher             2.1-2ubuntu0.22.04.1

Ubuntu 21.10:
   networkd-dispatcher             2.1-2ubuntu0.21.10.1

Ubuntu 20.04 LTS:
   networkd-dispatcher             2.1-2~ubuntu20.04.2

Ubuntu 18.04 LTS:
   networkd-dispatcher             1.7-0ubuntu3.4

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