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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200410-24">
<title>MIT krb5: Insecure temporary file use in send-pr.sh</title>
<synopsis>
The send-pr.sh script, included in the mit-krb5 package, is vulnerable to
symlink attacks, potentially allowing a local user to overwrite arbitrary
files with the rights of the user running the utility.
</synopsis>
<product type="ebuild">mit-krb5</product>
<announced>October 25, 2004</announced>
<revised>January 30, 2005: 02</revised>
<bug>66359</bug>
<access>local</access>
<affected>
<package name="app-crypt/mit-krb5" auto="yes" arch="*">
<unaffected range="ge">1.3.5-r1</unaffected>
<unaffected range="rge">1.3.4-r1</unaffected>
<vulnerable range="le">1.3.5</vulnerable>
</package>
</affected>
<background>
<p>
MIT krb5 is the free implementation of the Kerberos network
authentication protocol written by the Massachusetts Institute of
Technology.
</p>
</background>
<description>
<p>
The send-pr.sh script creates temporary files in world-writeable
directories with predictable names.
</p>
</description>
<impact type="normal">
<p>
A local attacker could create symbolic links in the temporary files
directory, pointing to a valid file somewhere on the filesystem. When
send-pr.sh is called, this would result in the file being overwritten
with the rights of the user running the utility, which could be the
root user.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All MIT krb5 users should upgrade to the latest version:
</p>
<code>
# emerge sync
# emerge -pv &quot;&gt;=app-crypt/mit-krb5-1.3.4-r1&quot;
# emerge &quot;&gt;=app-crypt/mit-krb5-1.3.4-r1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0971">CAN-2004-0971</uri>
</references>
<metadata tag="submitter" timestamp="Tue, 19 Oct 2004 17:38:41 +0000">
koon
</metadata>
<metadata tag="bugReady" timestamp="Mon, 25 Oct 2004 13:03:38 +0000">
koon
</metadata>
</glsa>