GLSA 200512-05 Xmail: Privilege escalation through sendmail
Posted on: 12/14/2005 08:12 PM

A new security update has been released for Gentoo Linux - Xmail: Privilege escalation through sendmail. Here the announcement:

Gentoo Linux Security Advisory GLSA 200512-05
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http://security.gentoo.org/
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Severity: High
Title: Xmail: Privilege escalation through sendmail
Date: December 14, 2005
Bugs: #109381
ID: 200512-05

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Synopsis
========

The sendmail program in Xmail is vulnerable to a buffer overflow,
potentially resulting in local privilege escalation.

Background
==========

Xmail is an Internet and intranet mail server.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-mta/xmail lt; 1.22 gt;= 1.22

Description
===========

iDEFENSE reported that the AddressFromAtPtr function in the sendmail
program fails to check bounds on arguments passed from other functions,
and as a result an exploitable stack overflow condition occurs when
specifying the "-t" command line option.

Impact
======

A local attacker can make a malicious call to sendmail, potentially
resulting in code execution with elevated privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Xmail users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=mail-mta/xmail-1.22"

References
==========

[ 1 ] CVE-2005-2943
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2943
[ 2 ] iDEFENSE Security Advisory

http://www.idefense.com/application/poi/display?id21type=vulnerabilitiesflashstatus=true

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200512-05.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0



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