[security-alerts] FW: [SA20998] MIMEsweeper for Web Cross-Site Scripting and Denial of Service

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

> 
> TITLE:
> MIMEsweeper for Web Cross-Site Scripting and Denial of Service
> 
> SECUNIA ADVISORY ID:
> SA20998
> 
> VERIFY ADVISORY:
> http://secunia.com/advisories/20998/
> 
> CRITICAL:
> Moderately critical
> 
> IMPACT:
> Cross Site Scripting, DoS
> 
> WHERE:
> From remote
> 
> SOFTWARE:
> MIMEsweeper for Web 5.x
> http://secunia.com/product/3779/
> 
> DESCRIPTION:
> Two vulnerabilities have been reported in MIMEsweeper for Web, which
> can be exploited by malicious people to cause a DoS (Denial of
> Service) and conduct cross-site scripting attacks.
> 
> 1) Input passed via the URL when attempting to access blocked web
> sites (as defined by the MIMEsweeper policy) isn't properly sanitised
> before being returned to the user via an error page. This can be
> exploited to execute arbitrary HTML and script code in a user's
> browser session in context of an arbitrary blocked web site.
> 
> Example:
> http://[blocked web site]/[code]
> 
> 2) An error in the scanning functionality can be exploited to crash
> the Web Policy Engine service via a specially crafted, encrypted RAR
> archive.
> 
> SOLUTION:
> Update to version 5.1.15.
> http://www.clearswift.com/support/msw/patch_MswWeb.aspx
> 
> PROVIDED AND/OR DISCOVERED BY:
> 1) Erez Metula
> 2) Reported by the vendor.
> 
> ORIGINAL ADVISORY:
> Clearswift:
> http://download.mimesweeper.com/www/TechnicalDocumentation/Web
> ReadMeHotfix5115.htm
>