Cross site scripting (XSS) in Moodle 1.8.3 Jan 11 2008 11:51PM
Hanno Böck (ml hboeck de)
Source URL of this announcement:
http://int21.de/cve/CVE-2008-0123-moodle.html

References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0123

Description
Moodle is a course management system for educators.
The installer code is vulnerable to Cross Site Scripting, letting you inject
JavaScript and steal cookies. The XSS can only be triggered if there's a not
installed moodle, so this can be considered low impact. Still it's possible
to attack if an attacker knows from another person installing moodle.

Sample code
Sample XSS code:
<form method="post" action="http://localhost/moodle/install.php">
<input type="hidden" name="stage" value="3">
<input type="text" name="dbname" value='"><script>alert(1)</script>'>
<input type=submit>
</form>

Workaround/Fix
Update to 1.8.4.

Disclosure Timeline
2007-01-08 Vendor contacted
2007-01-08 Vendor fixed cvs
2007-01-11 Vendor released 1.8.4

CVE Information
The Common Vulnerabilities and Exposures (CVE) project has assigned the name
CVE-2008-0123 to this issue. This is a candidate for inclusion in the CVE
list (http://cve.mitre.org/), which standardizes names for security problems.
Credits and copyright

This vulnerability was discovered by Hanno Boeck of schokokeks.org webhosting.
It's licensed under the creative commons attribution license.
Hanno Boeck, 2008-01-12, http://www.hboeck.de

--
Hanno Böck Blog: http://www.hboeck.de/
GPG: 3DBD3B20 Jabber/Mail: hanno (at) hboeck (dot) de [email concealed]
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