Microsoft ASP.NET ValidateRequest "less-than tilde slash" STYLE Element Bypass

  Severity: MEDIUM
  CVE Identifier: CVE-2008-3843
  Advisory Date: JUL 21, 2015

  DESCRIPTION

Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a "<~/" (less-than tilde slash) sequence followed by a crafted STYLE element.

  TREND MICRO PROTECTION INFORMATION

Apply associated Trend Micro DPI Rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1000552
  Trend Micro Deep Security DPI Rule Name: 1000552 - Generic Cross Site Scripting(XSS) Prevention

  AFFECTED SOFTWARE AND VERSION

  • microsoft .net_framework 1.0
  • microsoft .net_framework 1.1
  • microsoft .net_framework 2.0