[NEWS] De-Anonymizer (SCRIPT Bypassing)

From: support@securiteam.com
Date: 04/25/02


From: support@securiteam.com
To: list@securiteam.com
Date: Thu, 25 Apr 2002 10:22:23 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
- - promotion

When was the last time you checked your server's security?
How about a monthly report?
http://www.AutomatedScanning.com - Know that you're safe.
- - - - - - - - -

  De-Anonymizer (SCRIPT Bypassing)
------------------------------------------------------------------------

SUMMARY

A technique allowing the bypassing of Anonymizer's SCRIPT filtering
mechanism has been found. The technique would allow a malicious attackers
to insert hostile JavaScript into their web pages and cause visiting users
(even if they visit through Anonymizer) to execute it.

DETAILS

The new technique utilizes a <SCR!PT> (NOTE: The letter I has been
replaced with !) tag without a closing </SCRIPT> tag to fool Anonymizer
into allowing an onError event to pass filters. This allows an attacker to
execute JavaScript with obvious security breaches.

Example:
<HTML>
  <BODY>
    <SCR!PT>
    <IMG src="::" width="0" height="0"
onError="window.navigate('http://spoor12.edup.tudelft.nl');">
  </BODY>
</HTML>
(NOTE: The letter I has been replaced with !)

ADDITIONAL INFORMATION

The information has been provided by <mailto:skylined@edup.tudelft.nl>
Berend-Jan Wever.

========================================

This bulletin is sent to members of the SecuriTeam mailing list.
To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

====================
====================

DISCLAIMER:
The information in this bulletin is provided "AS IS" without warranty of any kind.
In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.



Relevant Pages

  • [UNIX] Sensitive Information Disclosure Vulnerability Found in SIPS (PHP)
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... A security vulnerability in the product allows attackers to get access to ... In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. ...
    (Securiteam)
  • [UNIX] More Local Root Vulnerabilities during Installation of Tarantella Enterprise
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... in the installation process, which would allow local attackers to change ... In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. ...
    (Securiteam)
  • [NEWS] SpiDynamics WebInspect Keeps Track of Its Users (Trial License)
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... WebInspect, S.P.I. Dynamic's premier product, is a network-based web ... We make no effort to hide that this remote authentication is done. ...
    (Securiteam)
  • [NT] Lysias Lidik Web Server Suffers from a Directory Traversal Vulnerability
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... outside the normally bounding HTML root directory. ... In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. ...
    (Securiteam)
  • [UNIX] YaBB Cross-Site Scripting Vulnerability (NULL)
    ... The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com ... YaBB is a leading provider of free, ... In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. ...
    (Securiteam)