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Squiz Matrix - User Account Enumeration

​Release Date:
12-Dec-2011

Software: Squiz - Matrix http://www.squiz.net/
"Squiz Matrix delivers highly flexible and robust business integration engine and application development tools. It is an evolution, and the latest release, of the very successful MySource Matrix content management system."

Versions tested / affected:
Squiz Matrix 4.6.0

Vulnerability discovered:
User Account Enumeration and User Account Information Disclosure

Vulnerability impact:
Low - Remote user accounts can be ascertained, and then possibly used to further gain access to valid credentials.

Vulnerability information:
Most information in Squiz Matrix CMS, including users, are stored as entites called "assets". This includes user accounts. By enumerating all assets, it is possible to determine if the asset is a user account by viewing the web page of a given asset by looking for the asset name prepended by a "~" character. Furthermore, if a valid user account asset is found, under most conditions tested, it is possible to disclose the user's account's full name/description by looking at the user's asset offset by -2.

Example:
http://[target]/?a=1000
You do not have permission to access <i>~test</i>

http://[target]/?a=998
You do not have permission to access <i>Test Account</i>

Recommendation:
Upgrade to version 4.4.5 or 4.6.1

Workaround: N/A.

Credit:
This vulnerability was disclosed by Troy Rose

Disclosure timeline:
05-Oct-2011 - Discovered during audit.
08-Nov-2011 - Notified vendor. Vendor response.
11-Nov-2011 - Vendor patched in CVS repository.
11-Nov-2011 - Vendor announces release of v4.4.5 and 4.6.1
05-Dec-2011 - Vendor releases v4.4.5 and 4.6.1
12-Dec-2011 - Disclosure.

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