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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
=================
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Package / Vulnerable / Unaffected
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1 mail-mta/xmail < 1.22 >= 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 ">=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?id=321&type=vulnerabilities&flashstatus=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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