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Gentoo Linux Security Advisory                           GLSA 201611-20
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: TestDisk: User-assisted execution of arbitrary code
     Date: November 22, 2016
     Bugs: #548258
       ID: 201611-20

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Synopsis
=======
A buffer overflow in TestDisk might allow remote attackers to execute
arbitrary code.

Background
=========
TestDisk is powerful free data recovery software! It was primarily
designed to help recover lost partitions and/or make non-booting disks
bootable again when these symptoms are caused by faulty software:
certain types of viruses or human error (such as accidentally deleting
a Partition Table). Partition table recovery using TestDisk is really
easy.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-admin/testdisk           < 7.0-r2                  >= 7.0-r2 

Description
==========
A buffer overflow can be triggered within TestDisk when a malicious
disk image is attempting to be recovered.

Impact
=====
A remote attacker could coerce the victim to run TestDisk against their
malicious image.  This may be leveraged by an attacker to crash
TestDisk and gain control of program execution.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All TestDisk users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-admin/testdisk-7.0"

References
=========
[ 1 ] TestDisk check_OS2MB Stack Buffer overflow
      
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/201611-20

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
======
Copyright 2016 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/