[ GLSA 200412-26 ] ViewCVS: Information leak and XSS vulnerabilities

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200412-26
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: ViewCVS: Information leak and XSS vulnerabilities
      Date: December 28, 2004
      Bugs: #72461, #73772
        ID: 200412-26

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Synopsis
========

ViewCVS is vulnerable to an information leak and to cross-site
scripting (XSS) issues.

Background
==========

ViewCVS is a browser interface for viewing CVS and Subversion version
control repositories through a web browser.

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

    -------------------------------------------------------------------
     Package           /      Vulnerable      /             Unaffected
    -------------------------------------------------------------------
  1  www-apps/viewcvs     <= 0.9.2_p20041207     >= 0.9.2_p20041207-r1

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

The tar export functions in ViewCVS bypass the 'hide_cvsroot' and
'forbidden' settings and therefore expose information that should be
kept secret (CAN-2004-0915). Furthermore, some error messages in
ViewCVS do not filter user-provided information, making it vulnerable
to a cross-site scripting attack (CAN-2004-1062).

Impact
======

By using the tar export functions, a remote attacker could access
information that is configured as restricted. Through the use of a
malicious request, an attacker could also inject and execute malicious
script code, potentially compromising another user's browser.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ViewCVS users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=www-apps/viewcvs-0.9.2_p20041207-r1"

References
==========

  [ 1 ] CAN-2004-0915
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0915
  [ 2 ] CAN-2004-1062
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1062

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

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

  http://security.gentoo.org/glsa/glsa-200412-26.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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