PR07-20: Webroot disclosure on Webbler CMS
This advisory has been published following consultation with UK CPNI (formerly known as NISCC)
Date Found: 14th June 2007
Successfully tested on: Webbler CMS version 3.1.3. Earlier versions are possibly affected as well.
Note: the version number is usually included within 'meta' HTML tags and 'X-Powered-By' HTTP response headers. i.e.:
<meta name="generator" content="webbler 3.1.3 - http://tincan.co.uk/webbler" />
X-Powered-By: webbler version 3.1.3
Sites that are generated/managed through Webbler CMS disclose the webroot within HTML comments. i.e.:
<!-- /var/webbler_cache/www.target-domain.com/13697/index.php--><!-- lid: -->
A remote attacker could recover information with regards to the target site's directory structure.
This kind of information can be useful for attackers in certain scenarios. i.e.: when attempting to exploit file retrieval vulnerabilities.
Successfully tested on:
Webbler CMS 3.1.3
Apache web server (unknown version)
Author: Adrian Pastor of ProCheckUp [adrian.pastor [at] procheckup.com]
ProCheckUp thanks Tincan for fixing this vulnerability so promptly.
This issue has been fixed on version version 3.1.6.
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