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Gentoo Linux Security Advisory GLSA 200705-25
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http://security.gentoo.org/
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Severity: High
Title: file: Integer overflow
Date: May 31, 2007
Bugs: #179583
ID: 200705-25
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Synopsis
========
An integer overflow vulnerability has been reported in file allowing
for the user-assisted execution of arbitrary code.
Background
==========
file is a utility that guesses a file format by scanning binary data
for patterns.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-apps/file < 4.21 >= 4.21
-------------------------------------------------------------------
# Package 1 only applies to x86, PPC and HPPA users.
Description
===========
Colin Percival from FreeBSD reported that the previous fix for the
file_printf() buffer overflow introduced a new integer overflow.
Impact
======
A remote attacker could entice a user to run the file program on an
overly large file (more than 1Gb) that would trigger an integer
overflow on 32-bit systems, possibly leading to the execution of
arbitrary code with the rights of the user running file.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
Since file is a system package, all Gentoo users should upgrade to the
latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/file-4.21"
References
==========
[ 1 ] CVE-2007-2799
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2799
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200705-25.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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