CERT-In Vulnerability Note
CIVN-2006-0095
Microsoft .NET Framework 2.0 ASP.NET 2.0 Cross-Site Scripting Vulnerability
Original Issue Date:October 11, 2006
Severity Rating: MEDIUM
Systems Affected
Microsoft Windows 2000 Service Pack 4 Microsoft Windows XP Service Pack 1 or Windows XP Service Pack 2 Microsoft Windows XP Professional x64 Edition Microsoft Windows XP Tablet PC Edition Microsoft Windows XP Media Center Edition Microsoft Windows Server 2003 or Microsoft Windows Server 2003 Service Pack 1 Microsoft Windows Server 2003 for Itanium-based Systems or Windows Server 2003 with SP1 for Itanium-based Systems Microsoft Windows Server 2003 x64 Edition Microsoft .NET Framework 2.0
Overview
A cross-site scripting vulnerability exists in a server running a vulnerable version of the Microsoft .NET Framework 2.0 ASP.NET 2.0 . That could inject a client side script in the user's browser. This vulnerability could allow a malicious user to gain unauthorized access to the effected system.
Description
A cross-site scripting vulnerability has been reported in Microsoft .NET Framework 2.0 due to By default, .NET Framework 2.0 controls do not set the AutoPostBack property to true.
On a vulnerable version of the .NET Framework 2.0, a malicious user could inject a client-side script in the users browser.
The script could spoof content, disclose information, or take any action that the user could take on the affected web site. The vulnerability caused due to the Microsoft .NET Framework 2.0 validates the value from HTTP request. User interaction is required to exploit the vulnerability.
Workaround
On computers running .NET Framework 2.0, do not set the AutoPostBack property for controls on a page to "true".
Solution
Apply appropriate patches as mentioned in Microsoft Security Bulletin MS06-056
Vendor Information
Microsoft
http://www.microsoft.com/technet/security/Bulletin/MS06-056.mspx
References
Microsoft
http://www.microsoft.com/technet/security/Bulletin/MS06-056.mspx
SecurityFocus
http://www.securityfocus.com/bid/20337/info
FrSIRT
http://www.frsirt.com/english/advisories/2006/3976
Secunia
http://secunia.com/advisories/22307/
US CERT
http://www.kb.cert.org/vuls/id/455604
CVE Name
CVE-2006-3436
Disclaimer
The information provided herein is on "as is" basis, without warranty of any kind.
Contact Information
Email: info@cert-in.org.in Phone: +91-11-2436857
Postal address
Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India
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