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Microsoft Windows ASP.NET Padding Oracle Vulnerability ( 29 September 2010 )

Last Update Date: 28 Jan 2011 Release Date: 29 Sep 2010 4670 Views

RISK: Medium Risk

An information disclosure vulnerability exists in ASP.NET due to improper error handling during encryption padding verification. An attacker who successfully exploited this vulnerability could read data, such as the view state, which was encrypted by the server. This vulnerability can also be used for data tampering, which, if successfully exploited, could be used to decrypt and tamper with the data encrypted by the server. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to produce information that could be used to try to further compromise the affected system. In Microsoft .NET Framework 3.5 Service Pack 1 and above, this vulnerability can also be used by an attacker to retrieve the contents of any file within the ASP.NET application, including web.config.


Impact

  • Information Disclosure

System / Technologies affected

  • Windows XP
  • Windows Server 2003
  • Windows Vista
  • Windows Server 2008
  • Windows 7
  • Windows Server 2008 R2

Solutions

Before installation of the software, please visit the software manufacturer web-site for more details.

Download locations for this patch


Vulnerability Identifier


Source


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