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TUCoPS :: Linux :: Gentoo :: tb10491.htm

File: Denial of Service



File: Denial of Service
File: Denial of Service




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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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