Ubuntu 22.04 USN-5459-1 Critical cifs-utils Security Alert

ubuntu

June 2, 2022

Several security issues were fixed in cifs-utils.

Summary

Several security issues were fixed in cifs-utils.

Software Description:

- cifs-utils: Common Internet File System utilities

Details:

Aurélien Aptel discovered that cifs-utils invoked a shell when requesting a

password. In certain environments, a local attacker could possibly use this

issue to escalate privileges. This issue only affected Ubuntu 18.04 LTS and

Ubuntu 20.04 LTS. (CVE-2020-14342)

It was discovered that cifs-utils incorrectly used host credentials when

mounting a krb5 CIFS file system from within a container. An attacker

inside a container could possibly use this issue to obtain access to

sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu

20.04 LTS. (CVE-2021-20208)

It was discovered that cifs-utils incorrectly handled certain command-line

arguments. A local attacker could possibly use this issue to obtain root

privileges. (CVE-2022-27239)

It was discovered that cifs-utils incorrectly handled verbose logging. A

loc...

Read the Full Advisory

Topics Covered

security advisory software update privilege escalation ubuntu sensitive information cifs-utils command-line arguments

Update Instructions

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

Ubuntu 22.04 LTS:
  cifs-utils                      2:6.14-1ubuntu0.1

Ubuntu 21.10:
  cifs-utils                      2:6.11-3.1ubuntu0.1

Ubuntu 20.04 LTS:
  cifs-utils                      2:6.9-1ubuntu0.2

Ubuntu 18.04 LTS:
  cifs-utils                      2:6.8-1ubuntu1.2

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