Practice
In web security, cross-site tracing (abbreviated "XST") is a network security vulnerability that exploits the HTTP TRACE method.
XST scenarios use ActiveX , Flash , or any other controls that allow an HTTP TRACE request to be executed. The HTTP TRACE response includes all HTTP headers , including authentication data and the contents of HTTP cookies , which then become accessible to the script. Combined with cross-domain access flaws in web browsers , the exploit can harvest cached credentials from any website, including those that use SSL .
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