### Vulnerability Overview This vulnerability involves enhanced URL validation, specifically protocol whitelist verification for `statusURL`. The current code fails to properly validate the protocol of `statusURL`, which may lead to security vulnerabilities. ### Impact Scope - **File**: `plugin/live/test.php` - **Functions**: `liveNormalizedStatusURL($url)` and `liveStatusTestLog($url, $filename)` ### Remediation Plan 1. **Enhance URL Validation**: Add protocol whitelist validation for `statusURL` in both `liveNormalizedStatusURL` and `liveStatusTestLog` functions. 2. **Specific Modifications**: - In the `liveNormalizedStatusURL` function, add protocol validation for `statusURL`. - In the `liveStatusTestLog` function, similarly add protocol validation for `statusURL`. ### POC Code ```php // Before modification function liveNormalizedStatusURL($url) { if (empty($url) || $url == "php://input" || preg_match("/^http/", $url)) { return false; } return $url; } // After modification function liveNormalizedStatusURL($url) { if (empty($url) || $url == "php://input" || preg_match("/^http/", $url)) { return false; } if (empty($statusURL) || $statusURL == "php://input" || preg_match("/^https?:\/\/.*/", $statusURL)) { return false; } return $url; } // Before modification function liveStatusTestLog($url, $filename) { if (empty($url) || $url == "php://input" || preg_match("/^http/", $url)) { return false; } return true; } // After modification function liveStatusTestLog($url, $filename) { if (empty($url) || $url == "php://input" || preg_match("/^http/", $url)) { return false; } if (empty($statusURL) || $statusURL == "php://input" || preg_match("/^https?:\/\/.*/", $statusURL)) { return false; } return true; } ```