A vulnerability was found in DTH DT Register Extension up to 2.8.17/3.1.11 on Joomla (Joomla Component) and classified as critical. Affected by this issue is an unknown code of the file index.php. The manipulation of the argument cat[0] with the input value 6) OR 1-- - leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The weakness was shared 12/13/2016 by Elar Lang as SQL injection in Joomla extension DT Register as confirmed mailinglist post (Full-Disclosure). The advisory is available at seclists.org. The vendor cooperated in the coordination of the public release. The attack may be launched remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:index.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.8.18 or 3.1.12 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

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• Joomla Component

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• DTH

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• DT Register Extension

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