A vulnerability, which was classified as critical, was found in Flatnuke3 (Content Management System) (unknown version). This affects an unknown code block of the file description.it.php. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Direct static code injection vulnerability in the download module in Flatnuke 3 allows remote authenticated administrators to inject arbitrary PHP code into a description.it.php file in a subdirectory of Download/ by saving a description and setting fneditmode to 1. NOTE: unauthenticated remote attackers can exploit this by leveraging a cookie manipulation issue.

The weakness was presented 10/25/2007 as confirmed posting (Bugtraq). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2007-5772 since 11/01/2007. It is possible to initiate the attack remotely. The requirement for exploitation is a authentication. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1059 for this issue.

A public exploit has been developed by KiNgOfThEwOrLd and been published before and not just after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:description.it.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (4562). See 39512 for similar entry.

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• Content Management System

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• Flatnuke3

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CPE 2.2info

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