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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200409-18">
<title>cdrtools: Local root vulnerability in cdrecord if set SUID root</title>
<synopsis>
cdrecord, if manually set SUID root, is vulnerable to a local root exploit
allowing users to escalate privileges.
</synopsis>
<product type="ebuild">cdrtools</product>
<announced>September 14, 2004</announced>
<revised>September 14, 2004: 01</revised>
<bug>63187</bug>
<access>local</access>
<affected>
<package name="app-cdr/cdrtools" auto="yes" arch="*">
<unaffected range="ge">2.01_alpha37-r1</unaffected>
<unaffected range="rge">2.01_alpha28-r2</unaffected>
<vulnerable range="le">2.01_alpha37</vulnerable>
</package>
</affected>
<background>
<p>
The cdrtools package is a set of tools for CD recording, including the
popular cdrecord command-line utility.
</p>
</background>
<description>
<p>
Max Vozeler discovered that the cdrecord utility, when set to SUID root,
fails to drop root privileges before executing a user-supplied RSH program.
By default, Gentoo does not ship the cdrecord utility as SUID root and
therefore is not vulnerable. However, many users (and CD-burning
front-ends) set this manually after installation.
</p>
</description>
<impact type="high">
<p>
A local attacker could specify a malicious program using the $RSH
environment variable and have it executed by the SUID cdrecord, resulting
in root privileges escalation.
</p>
</impact>
<workaround>
<p>
As a workaround, you could remove the SUID rights from your cdrecord
utility :
</p>
<code>
# chmod a-s /usr/bin/cdrecord</code>
</workaround>
<resolution>
<p>
All cdrtools users should upgrade to the latest version:
</p>
<code>
# emerge sync
# emerge -pv ">=app-cdr/cdrtools-2.01_alpha37-r1"
# emerge ">=app-cdr/cdrtools-2.01_alpha37-r1"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0806">CAN-2004-0806</uri>
</references>
<metadata tag="requester" timestamp="Tue, 14 Sep 2004 07:01:02 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Tue, 14 Sep 2004 15:13:17 +0000">
koon
</metadata>
<metadata tag="bugReady" timestamp="Tue, 14 Sep 2004 20:25:30 +0000">
jaervosz
</metadata>
</glsa>
|
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