[ GLSA 202009-16 ] LinuxCIFS: Shell injection

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Gentoo Linux Security Advisory                           GLSA 202009-16
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: LinuxCIFS: Shell injection
     Date: September 29, 2020
     Bugs: #743211
       ID: 202009-16

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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
    -------------------------------------------------------------------
  1  net-fs/cifs-utils             < 6.11                     >= 6.11

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
==========

[ 1 ] CVE-2020-14342
      https://nvd.nist.gov/vuln/detail/CVE-2020-14342

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202009-16

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
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

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