Microsoft IIS 5.0 and 6.0 allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes IIS to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
Link | Tags |
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https://exchange.xforce.ibmcloud.com/vulnerabilities/42899 | vdb entry third party advisory |
http://www.securiteam.com/securityreviews/5GP0220G0U.html | broken link |
http://www.watchfire.com/resources/HTTP-Request-Smuggling.pdf | broken link |
http://seclists.org/lists/bugtraq/2005/Jun/0025.html | third party advisory mailing list |