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Gentoo Linux Security Advisory                           GLSA 201801-06
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Back In Time: Command injection
     Date: January 07, 2018
     Bugs: #636974
       ID: 201801-06

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Synopsis
========

A command injection vulnerability in 'Back in Time' may allow for the
execution of arbitrary shell commands.

Background
==========

A simple backup tool for Linux, inspired by "flyback project".

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-backup/backintime        < 1.1.24                  >= 1.1.24 

Description
===========

'Back in Time' did improper escaping/quoting of file paths used as
arguments to the 'notify-send' command leading to some parts of file
paths being executed as shell commands within an os.system call.

Impact
======

A context-dependent attacker could execute arbitrary shell commands via
a specially crafted file.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All 'Back In Time' users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-backup/backintime-1.1.24"

References
==========

[ 1 ] CVE-2017-16667
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-16667

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

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

 https://security.gentoo.org/glsa/201801-06

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.

License
=======