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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200911-03">
<title>UW IMAP toolkit: Multiple vulnerabilities</title>
Multiple vulnerabilities have been found in the UW IMAP toolkit and the
c-client library, the worst of which leading to the execution of arbitrary
<product type="ebuild">c-client uw-imap</product>
<announced>November 25, 2009</announced>
<revised>November 25, 2009: 01</revised>
<package name="net-libs/c-client" auto="yes" arch="*">
<unaffected range="ge">2007e</unaffected>
<vulnerable range="lt">2007e</vulnerable>
<package name="net-mail/uw-imap" auto="yes" arch="*">
<unaffected range="ge">2007e</unaffected>
<vulnerable range="lt">2007e</vulnerable>
The UW IMAP toolkit is a daemon for the IMAP and POP3 network mail
protocols. The c-client library provides an API for IMAP, POP3 and
other protocols.
Multiple vulnerabilities were found in the UW IMAP toolkit:
<li>Aron Andersson and Jan Sahlin of Bitsec reported boundary errors in
the "tmail" and "dmail" utilities when processing overly long mailbox
names, leading to stack-based buffer overflows (CVE-2008-5005).</li>
<li>An error in smtp.c in the c-client library was found, leading to a
NULL pointer dereference vulnerability (CVE-2008-5006).</li>
Nussel reported an off-by-one error in the rfc822_output_char()
function in the RFC822BUFFER routines in the c-client library, as used
by the UW IMAP toolkit (CVE-2008-5514).</li>
<impact type="high">
A remote attacker could send an e-mail to a destination mailbox name
composed of a username and '+' character followed by a long string,
possibly leading to the execution of arbitrary code. A local attacker
could gain privileges by specifying a long folder extension argument to
the tmail or dmail program. Furthermore, a remote attacker could send a
specially crafted mail message to the UW IMAP toolkit or another daemon
using the c-client library, leading to a Denial of Service. A remote
SMTP server could respond to the QUIT command with a close of the TCP
connection instead of the expected 221 response code, possibly leading
to a Denial of Service.
There is no known workaround at this time.
All c-client library users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-libs/c-client-2007e&quot;</code>
All UW IMAP toolkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-mail/uw-imap-2007e&quot;</code>
<uri link="">CVE-2008-5005</uri>
<uri link="">CVE-2008-5006</uri>
<uri link="">CVE-2008-5514</uri>
<metadata tag="requester" timestamp="Tue, 13 Jan 2009 17:17:18 +0000">
<metadata tag="submitter" timestamp="Tue, 13 Jan 2009 17:27:25 +0000">
<metadata tag="bugReady" timestamp="Wed, 25 Nov 2009 13:23:47 +0000">