Remote PHP Code Execution Vulnerability in vBulletin by vBulletin Solutions

CVE-2017-17671

What is CVE-2017-17671?

vBulletin versions up to 5.3.x for Windows are vulnerable to remote PHP code execution due to a flaw in the handling of require_once calls. This vulnerability allows an unauthenticated attacker to exploit directory traversal sequences in crafted requests, effectively bypassing restrictions on standard traversal techniques and enabling access to arbitrary files. By manipulating the HTTP request, an attacker can inject PHP code into log files, potentially leading to compromise of the application and the underlying system.

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