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Gentoo Linux Security Advisory GLSA 200611-24
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http://security.gentoo.org/
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Severity: Normal
Title: LHa: Multiple vulnerabilities
Date: November 28, 2006
Bugs: #151252
ID: 200611-24
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Synopsis
========
LHa is affected by several vulnerabilities including the remote
execution of arbitrary code.
Background
==========
LHa is a console-based program for packing and unpacking LHarc
archives.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/lha < 114i-r6 >= 114i-r6
Description
===========
Tavis Ormandy of the Google Security Team discovered several
vulnerabilities in the LZH decompression component used by LHa. The
make_table function of unlzh.c contains an array index error and a
buffer overflow vulnerability. The build_tree function of unpack.c
contains a buffer underflow vulnerability. Additionally, unlzh.c
contains a code that could run in an infinite loop.
Impact
======
By enticing a user to uncompress a specially crafted archive, a remote
attacker could cause a Denial of Service by CPU consumption or execute
arbitrary code with the rights of the user running the application.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All LHa users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/lha-114i-r6"
References
==========
[ 1 ] CVE-2006-4335
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4335
[ 2 ] CVE-2006-4336
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4336
[ 3 ] CVE-2006-4337
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4337
[ 4 ] CVE-2006-4338
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4338
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200611-24.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 2006 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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