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Edit Report

Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2009080001

Below is a copy:

XOOPS Multiple Cross-Site Scripting Vulnerabilities - Security Advisory - SOS-09-005

Release Date. 31-Jul-2009
Vendor Notification Date. 15-Jun-2009
Product. XOOPS
Platform. Independent
Affected versions. 2.3.3 (verified), possibly othersSeverity Rating. Medium
Impact. Cookie/credential theft, impersonation, loss of confidentialityAttack Vector. Remote
Solution Status. Vendor patch
CVE reference. Not yet assigned

Details.
XOOPS is a content management system written in PHP. During an application penetration test Sense of Security identified that Input passed to the "op" parameter of viewpmsg.php, and in the query string of user.php are vulnerable to Cross-Site Scripting vulnerabilities. This occurred as a result of the application not properly filtering HTML tags which allowed malicious JavaScript to be embedded. When input is incorrectly validated and not properly sanitised and then displayed in a web page, attackers can trick users into viewing the web page and causing malicious code to be executed.

Proof of Concept.
http://lP/xoops-2.3.3/htdocs/modules/pm/viewpmsg.php?op='"><script>alert('vulnerable')</script> <link id='
http://lP/xoops-2.3.3/htdocs/modules/profile/user.php?"><script>alert('vulnerable')</script>

Solution.
Vendor patch

Discovered by.
SOS Labs
About us.
Sense of Security is a leading provider of IT security and risk management solutions. Our team has expert skills in assessment and assurance, strategy and architecture, and deployment through to ongoing management. We are Australia's premier application security consultancy and trusted IT security advisor to many of the countries largest organisations.
Sense of Security Pty Ltd
Level 3, 66 King St
Sydney NSW 2000

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