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Unchecked Buffer in ASP.NET Worker Process
Posted by Philipp Esselbach on: 06/07/2002 01:23 AM [ Print | 0 comment(s) ]
ASP.NET is a collection of technologies that help developers to build web-based applications. Web-based applications, including those built using ASP.NET, rely on HTTP to provide connectivity. One characteristic of HTTP as a protocol is that it is stateless, meaning that each page request from a user to a site is reckoned an independent request. To compensate for this, ASP.NET provides for session state management through a variety of modes.
One of these modes is StateServer mode. This mode stores session state information in a separate, running process. That process can run on the same machine or a different machine from the ASP.NET application. There is an unchecked buffer in one of the routines that handles the processing of cookies in StateServer mode. A security vulnerability results because it is possible for an attacker to seek to exploit it by mounting a buffer overrun attack. A successful attack could cause the ASP.NET application to restart. As a result, all current users of the web-based application would see their current session restart and their current session information would be lost.
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One of these modes is StateServer mode. This mode stores session state information in a separate, running process. That process can run on the same machine or a different machine from the ASP.NET application. There is an unchecked buffer in one of the routines that handles the processing of cookies in StateServer mode. A security vulnerability results because it is possible for an attacker to seek to exploit it by mounting a buffer overrun attack. A successful attack could cause the ASP.NET application to restart. As a result, all current users of the web-based application would see their current session restart and their current session information would be lost.
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