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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200504-28">
<title>Heimdal: Buffer overflow vulnerabilities</title>
<synopsis>
Buffer overflow vulnerabilities have been found in the telnet client in
Heimdal which could lead to execution of arbitrary code.
</synopsis>
<product type="ebuild">Heimdal</product>
<announced>April 28, 2005</announced>
<revised>April 28, 2005: 01</revised>
<bug>89861</bug>
<access>remote</access>
<affected>
<package name="app-crypt/heimdal" auto="yes" arch="*">
<unaffected range="ge">0.6.4</unaffected>
<vulnerable range="lt">0.6.4</vulnerable>
</package>
</affected>
<background>
<p>
Heimdal is a free implementation of Kerberos 5 that includes a
telnet client program.
</p>
</background>
<description>
<p>
Buffer overflow vulnerabilities in the slc_add_reply() and
env_opt_add() functions have been discovered by Gael Delalleau in the
telnet client in Heimdal.
</p>
</description>
<impact type="normal">
<p>
Successful exploitation would require a vulnerable user to connect
to an attacker-controlled host using the telnet client, potentially
executing arbitrary code with the permissions of the user running the
application.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All Heimdal users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-crypt/heimdal-0.6.4&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0468">CAN-2005-0468</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469">CAN-2005-0469</uri>
</references>
<metadata tag="requester" timestamp="Tue, 26 Apr 2005 20:42:17 +0000">
koon
</metadata>
<metadata tag="submitter" timestamp="Wed, 27 Apr 2005 00:18:43 +0000">
formula7
</metadata>
<metadata tag="bugReady" timestamp="Thu, 28 Apr 2005 08:35:57 +0000">
koon
</metadata>
</glsa>