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Gentoo Linux Security Advisory GLSA 200911-03
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http://security.gentoo.org/
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Severity: High
Title: UW IMAP toolkit: Multiple vulnerabilities
Date: November 25, 2009
Bugs: #245425, #252567
ID: 200911-03
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Synopsis
========
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 code.
Background
==========
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.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/c-client < 2007e >= 2007e
2 net-mail/uw-imap < 2007e >= 2007e
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
Multiple vulnerabilities were found in the UW IMAP toolkit:
* 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).
* An error in smtp.c in the c-client library was found, leading to a
NULL pointer dereference vulnerability (CVE-2008-5006).
* Ludwig 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).
Impact
======
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.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All c-client library users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/c-client-2007e"
All UW IMAP toolkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/uw-imap-2007e"
References
==========
[ 1 ] CVE-2008-5005
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5005
[ 2 ] CVE-2008-5006
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5006
[ 3 ] CVE-2008-5514
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5514
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200911-03.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@xxxxxxxxxx or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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