GLSA 202009-16: LinuxCIFS: Shell injection

http://security.gentoo.org/

Severity:	normal
Title:	LinuxCIFS: Shell injection
Date:	09/29/2020
Bugs:	#743211
ID:	202009-16

Synopsis

A vulnerability in LinuxCIFS may allow a remote code execution via a command line option.

Background

The LinuxCIFS utils are a collection of tools for managing Linux CIFS Client Filesystems.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-fs/cifs-utils	< 6.11	>= 6.11	All supported architectures

Description

The mount.cifs utility had a shell injection issue where one can embed shell commands via the username mount option. Those commands will be run via popen() in the context of the user calling mount.

Impact

A remote attacker could entice a user to use a specially crafted argument using mount.cifs, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All LinuxCIFS users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-fs/cifs-utils-6.11"

References

CVE-2020-14342

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202009-16.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.