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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200704-18">
<title>Courier-IMAP: Remote execution of arbitrary code</title>
<synopsis>
A vulnerability has been discovered in Courier-IMAP allowing for remote
code execution with root privileges.
</synopsis>
<product type="ebuild">courier-imap</product>
<announced>2007-04-22</announced>
<revised>2007-04-23: 02</revised>
<bug>168196</bug>
<access>remote</access>
<affected>
<package name="net-mail/courier-imap" auto="yes" arch="*">
<unaffected range="ge">4.0.6-r2</unaffected>
<unaffected range="lt">4.0.0</unaffected>
<vulnerable range="lt">4.0.6-r2</vulnerable>
</package>
</affected>
<background>
<p>
Courier-IMAP is an IMAP server which is part of the Courier mail
system. It provides access only to maildirs.
</p>
</background>
<description>
<p>
CJ Kucera has discovered that some Courier-IMAP scripts don't properly
handle the XMAILDIR variable, allowing for shell command injection.
</p>
</description>
<impact type="high">
<p>
A remote attacker could send specially crafted login credentials to a
Courier-IMAP server instance, possibly leading to remote code execution
with root privileges.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All Courier-IMAP users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/courier-imap-4.0.6-r2"</code>
</resolution>
<references/>
<metadata tag="requester" timestamp="2007-04-12T14:15:03Z">
jaervosz
</metadata>
<metadata tag="bugReady" timestamp="2007-04-12T14:15:17Z">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="2007-04-16T21:50:11Z">
p-y
</metadata>
</glsa>
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