Microsoft ASP.NET Framework HTTP cross-site scripting

asp-http-xss (28658) The risk level is classified as MediumMedium Risk

Description:

Microsoft ASP.NET is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could send a specially-crafted HTTP request to inject malicious script into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to obtain sensitive information.

Platforms Affected:

  • Microsoft, .NET Framework 2.0
  • Microsoft, Windows 2000 SP4
  • Microsoft, Windows 2003 Server SP1 Itanium
  • Microsoft, Windows 2003 Server SP1
  • Microsoft, Windows 2003 Server x64
  • Microsoft, Windows 2003 Server Itanium
  • Microsoft, Windows XP x64-Professional
  • Microsoft, Windows XP Media Center
  • Microsoft, Windows XP SP2
  • Microsoft, Windows XP SP1
  • Microsoft, Windows XP Tablet PC

Remedy:

Apply the appropriate patch for your system, as listed in the latest Microsoft Security Bulletin. See References.

— OR —

Use Microsoft Automatic Update if it is supported by your operating system. The original bulletin issued by Microsoft has been superseded.

Consequences:

Gain Access

References:

  • Microsoft Security Bulletin MS06-056, Vulnerability in ASP.NET 2.0 Could Allow Information Disclosure (922770) at http://www.microsoft.com/technet/security/Bulletin/MS06-056.mspx.
  • Microsoft Security Bulletin MS07-040, Vulnerabilities in .NET Framework Could Allow Remote Code Execution (931212) at http://www.microsoft.com/technet/security/bulletin/ms07-040.mspx.
  • ASA-2006-217: Windows Security Updates for October 2006 - (MS06-056 - MS06-065)
  • BID-20337: Microsoft ASP.NET AutoPostBack Variable Cross-Site Scripting Vulnerability
  • CVE-2006-3436: Cross-site scripting (XSS) vulnerability in Microsoft .NET Framework 2.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors involving ASP.NET controls that set the AutoPostBack property to true.
  • FrSIRT/ADV-2006-3976: Microsoft .NET Framework Client-Side Cross Site Scripting Vulnerability (MS06-056)
  • SA22307: Microsoft .NET Framework Cross-Site Scripting Vulnerability
  • SECTRACK ID: 1017029: ASP.NET Input Validation Hole in AutoPostBack Feature Permits Cross-Site Scripting Attacks
  • US-CERT VU#455604: Microsoft .NET Framework contains a cross-site scripting vulnerability

Reported:

Oct 10, 2006

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