[ GLSA 200704-13 ] File: Denial of Service

[Raphael Marichez <falco () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200704-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: File: Denial of Service
      Date: April 17, 2007
      Bugs: #174217
        ID: 200704-13

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Synopsis
========

A vulnerability has been discovered in file allowing for a denial of
service.

Background
==========

file is a utility that identifies a file format by scanning binary data
for patterns.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  sys-apps/file       == 4.20                            >= 4.20-r1

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

Conor Edberg discovered an error in the way file processes a specific
regular expression.

Impact
======

A remote attacker could entice a user to open a specially crafted file,
using excessive CPU ressources and possibly leading to a Denial of
Service. Note that this vulnerability could be also triggered through
an automatic file scanner like amavisd-new.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All file users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=sys-apps/file-4.20-r1"

References
==========

  [ 1 ] CVE-2007-2026
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2026

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

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

  http://security.gentoo.org/glsa/glsa-200704-13.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
http://bugs.gentoo.org.

License
=======

Copyright 2007 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.

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

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