Vulnerability in Microsoft Internet Information Services

CVE-2005-2089

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."

Vulnerability class: HTTP Request Smuggling

EPSS: 0.310 (98.1th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

References