Ubuntu 22.10: USN-5811-1 Critical: Sudo Denial Of Service

ubuntu

January 18, 2023

Several security issues were fixed in Sudo.

Summary

Several security issues were fixed in Sudo.

Software Description:

- sudo: Provide limited super user privileges to specific users

Details:

Matthieu Barjole and Victor Cutillas discovered that Sudo incorrectly

handled user-specified editors when using the sudoedit command. A local

attacker that has permission to use the sudoedit command could possibly use

this issue to edit arbitrary files. (CVE-2023-22809)

It was discovered that the Protobuf-c library, used by Sudo, incorrectly

handled certain arithmetic shifts. An attacker could possibly use this

issue to cause Sudo to crash, resulting in a denial of service. This issue

only affected Ubuntu 22.04 LTS. (CVE-2022-33070)

Topics Covered

security advisory denial of service sudo update instructions user permissions ubuntu

Update Instructions

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

Ubuntu 22.10:
   sudo                            1.9.11p3-1ubuntu1.1
   sudo-ldap                       1.9.11p3-1ubuntu1.1

Ubuntu 22.04 LTS:
   sudo                            1.9.9-1ubuntu2.2
   sudo-ldap                       1.9.9-1ubuntu2.2

Ubuntu 20.04 LTS:
   sudo                            1.8.31-1ubuntu1.4
   sudo-ldap                       1.8.31-1ubuntu1.4

Ubuntu 18.04 LTS:
   sudo                            1.8.21p2-3ubuntu1.5
   sudo-ldap                       1.8.21p2-3ubuntu1.5

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