[security-alerts] FW: [SA17564] Microsoft Internet Explorer CSS Import Disclosure of Sensitive Information

["Kazennov, Vladimir" <Vladimir.Kazennov@xxxxxxxxxx>]

> 
> 
> TITLE:
> Microsoft Internet Explorer CSS Import Disclosure of Sensitive
> Information
> 
> SECUNIA ADVISORY ID:
> SA17564
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/17564/
> 
> CRITICAL:
> Less critical
> 
> IMPACT:
> Cross Site Scripting, Exposure of sensitive information
> 
> WHERE:
> From remote
> 
> SOFTWARE:
> Microsoft Internet Explorer 6.x
> http://secunia.com/product/11/
> 
> DESCRIPTION:
> Matan Gillon has discovered a vulnerability in Microsoft Internet
> Explorer, which can be exploited by malicious people to disclose
> potentially sensitive information.
> 
> The vulnerability is caused due to an error where the content of
> imported CSS (Cascading Style Sheets) from other domains is not
> properly protected from being read via the "cssText" DHTML property.
> 
> This can be exploited by a malicious web site to disclose parts of
> the content of certain documents served from another web site (e.g.
> HTML documents with a certain structure which can be parsed by the
> internal CSS parser), by loading the document via the "@import"
> directive and accessing the content of it via JavaScript.
> 
> The vulnerability has been confirmed on a fully patched system with
> Internet Explorer 6.0 and Microsoft Windows XP SP2.
> 
> SOLUTION:
> Disable Active Scripting except for trusted sites.
> 
> PROVIDED AND/OR DISCOVERED BY:
> Matan Gillon
> 
> ORIGINAL ADVISORY:
> http://www.hacker.co.il/security/ie/css_import.html
> 
> ----------------------------------------------------------------------