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Gentoo Linux Security Advisory                           GLSA 200412-23
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  Severity: Low
     Title: Zwiki: XSS vulnerability
      Date: December 21, 2004
      Bugs: #72315
        ID: 200412-23

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Synopsis
========

Zwiki is vulnerable to cross-site scripting attacks.

Background
==========

Zwiki is a Zope wiki-clone for easy-to-edit collaborative websites.

Affected packages
=================

    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  net-zope/zwiki      < 0.36.2-r1                      >= 0.36.2-r1

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

Due to improper input validation, Zwiki can be exploited to perform
cross-site scripting attacks.

Impact
======

By enticing a user to read a specially-crafted wiki entry, an attacker
can execute arbitrary script code running in the context of the
victim's browser.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Zwiki users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-zope/zwiki-0.36.2-r1"

References
==========

  [ 1 ] Zwiki Bug Report
        http://zwiki.org/925ZwikiXSSVulnerability

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

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

  http://security.gentoo.org/glsa/glsa-200412-23.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 2004 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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