The SOCKS 5 proxy code in XChat is vulnerable to a remote exploit.
Users would have to be using XChat through a SOCKS 5 server, enable
SOCKS 5 traversal which is disabled by default and also connect to an
attacker's custom proxy server.
Impact
======
This vulnerability may allow an attacker to run arbitrary code within
the context of the user ID of the XChat client.
Workaround
==========
A workaround is not currently known for this issue. All users are
advised to upgrade to the latest version of the affected package.
Resolution
==========
All XChat users should upgrade to the latest stable version:
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 (at) gentoo (dot) org [email concealed] or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 Gentoo Technologies, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
Gentoo Linux Security Advisory GLSA 200404-15
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http://security.gentoo.org/
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Severity: Low
Title: XChat 2.0.x SOCKS5 Vulnerability
Date: April 19, 2004
Bugs: #46856
ID: 200404-15
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Synopsis
========
XChat is vulnerable to a stack overflow that may allow a remote
attacker to run arbitrary code.
Background
==========
XChat is a multiplatform IRC client.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
net-irc/xchat < 2.0.8-r1 >= 2.0.8-r1
Description
===========
The SOCKS 5 proxy code in XChat is vulnerable to a remote exploit.
Users would have to be using XChat through a SOCKS 5 server, enable
SOCKS 5 traversal which is disabled by default and also connect to an
attacker's custom proxy server.
Impact
======
This vulnerability may allow an attacker to run arbitrary code within
the context of the user ID of the XChat client.
Workaround
==========
A workaround is not currently known for this issue. All users are
advised to upgrade to the latest version of the affected package.
Resolution
==========
All XChat users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-irc/xchat-2.0.8-r1"
# emerge ">=net-irc/xchat-2.0.8-r1"
Note that users of the gtk1 version of xchat (1.8.*) should upgrade to
xchat-1.8.11-r1:
# emerge sync
# emerge -pv "=net-irc/xchat-1.8.11-r1"
# emerge "=net-irc/xchat-1.8.11-r1"
References
==========
[ 1 ] http://mail.nl.linux.org/xchat-announce/2004-04/msg00000.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200404-15.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 (at) gentoo (dot) org [email concealed] or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 Gentoo Technologies, 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/1.0
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