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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200611-24">
<title>LHa: Multiple vulnerabilities</title>
<synopsis>
LHa is affected by several vulnerabilities including the remote execution
of arbitrary code.
</synopsis>
<product type="ebuild">lha</product>
<announced>November 28, 2006</announced>
<revised>November 28, 2006: 01</revised>
<bug>151252</bug>
<access>remote</access>
<affected>
<package name="app-arch/lha" auto="yes" arch="*">
<unaffected range="ge">114i-r6</unaffected>
<vulnerable range="lt">114i-r6</vulnerable>
</package>
</affected>
<background>
<p>
LHa is a console-based program for packing and unpacking LHarc
archives.
</p>
</background>
<description>
<p>
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.
</p>
</description>
<impact type="normal">
<p>
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.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All LHa users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-arch/lha-114i-r6&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4335">CVE-2006-4335</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4336">CVE-2006-4336</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4337">CVE-2006-4337</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4338">CVE-2006-4338</uri>
</references>
<metadata tag="requester" timestamp="Fri, 24 Nov 2006 21:52:23 +0000">
falco
</metadata>
<metadata tag="submitter" timestamp="Mon, 27 Nov 2006 17:02:28 +0000">
falco
</metadata>
<metadata tag="bugReady" timestamp="Mon, 27 Nov 2006 17:07:24 +0000">
falco
</metadata>
</glsa>