Serendipity Freetag-plugin 'serendipity[tagview]' Cross Site Scripting Vulnerability

Bugtraq ID:	49771
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Sep 26 2011 12:00AM
Updated:	Sep 26 2011 12:00AM
Credit:	Stefan Schurtz
Vulnerable:	S9Y Serendipity Freetag-plugin 3.23 S9Y Serendipity Freetag-plugin 3.22 S9Y Serendipity Freetag-plugin 3.21 S9Y Serendipity Freetag-plugin 3.08 S9Y Serendipity Freetag-plugin 3.07 S9Y Serendipity Freetag-plugin 2.96 S9Y Serendipity Freetag-plugin 2.95
Not Vulnerable:

Serendipity Freetag-plugin 'serendipity[tagview]' Cross Site Scripting Vulnerability

Serendipity Freetag-plugin is prone to a cross-site scripting vulnerability because it fails to sufficiently sanitize user-supplied data.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks.

This issue affects Serendipity Freetag-plugin 3.22; prior versions may also be affected.

Serendipity Freetag-plugin 'serendipity[tagview]' Cross Site Scripting Vulnerability

An attacker can exploit this issue by enticing an unsuspecting victim to follow a malicious URI.

The following example URI is available:

http://www.example.com/serendipity/serendipity_admin?serendipity[adminModule]=event_display&serendipity[adminAction]=managetags&serendipity[tagview]=[xss]

Serendipity Freetag-plugin 'serendipity[tagview]' Cross Site Scripting Vulnerability

Solution:
Vendor updates are available. Please see the reference for more information.