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The proc_deutf function in includes/functions_vbseocp_abstract.php in vBSEO versions 3.5.0, 3.5.1, 3.5.2, 3.6.0, and earlier is vulnerable to remote PHP code execution. The vulnerability arises from improper handling of the char_repl parameter, which is inserted into a regular expression processed by preg_replace with the 'e' (eval) modifier. This allows remote attackers to inject and execute arbitrary PHP code using complex curly syntax in the char_repl parameter.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module (Ruby file) that exploits a remote PHP code injection vulnerability in vBSEO (versions 3.6.0 and earlier). The vulnerability exists in the proc_deutf() function in /includes/functions_vbseocp_abstract.php, which improperly sanitizes user input passed via the 'char_repl' POST parameter. The exploit sends a crafted POST request to the target's /vb/vbseocp.php endpoint, injecting PHP code that is executed via the preg_replace() function's 'e' modifier. The module supports both custom command execution (via the CMD option) and arbitrary PHP payloads (using Metasploit's payload system), delivering the code base64-encoded in an HTTP header. The exploit is weaponized, allowing for remote code execution on vulnerable vBSEO installations. The repository is structured as a single Metasploit exploit module, with clear references to the affected file and endpoint.
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