USN-5459-1: cifs-utils vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• 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
local attacker could possibly use this issue to obtain sensitive
information. (CVE-2022-29869)

Update instructions

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

Ubuntu 22.04

• cifs-utils - 2:6.14-1ubuntu0.1

Ubuntu 21.10

• cifs-utils - 2:6.11-3.1ubuntu0.1

Ubuntu 20.04

• cifs-utils - 2:6.9-1ubuntu0.2

Ubuntu 18.04

• cifs-utils - 2:6.8-1ubuntu1.2

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

References

• CVE-2020-14342
• CVE-2022-29869
• CVE-2021-20208
• CVE-2022-27239