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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

=======



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