WordPress Plugin external-image-replace 1.0.8 file_get_contents SSRF/RCE Analysis

Critical Vulnerability Information File Path: Last Modified: September 27, 2015 (7 years ago) File Size: 5.1 KB Potential Vulnerability Points 1. External Image Replacement Function: - Line 46: Initializes an array to store matched image URLs. - Line 50: Iterates through matched image URLs. - Line 53: Checks if the image URL is an external link. - Line 56: Uses to download external images, posing potential risks of remote code execution or denial-of-service attacks. 2. Image Upload and Processing: - Line 84: Creates a temporary file. - Line 86: Copies the downloaded image to a temporary file, potentially causing file system permission issues. - Line 90: Checks if the file was successfully uploaded. - Line 94: Includes image processing functions. - Line 98: Handles cases where thumbnail generation fails. 3. Database Operations: - Line 106: Updates attachment metadata. - Line 110: Checks the update flag. - Line 114: Deletes the attachment, potentially leading to data loss risks. Security Recommendations Perform strict validation and filtering of external image URLs. Replace with secure file handling functions. Ensure proper file system permissions are set to prevent unauthorized access. Implement exception handling for database operations to maintain data integrity.

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WordPress Plugin external-image-replace 1.0.8 file_get_contents SSRF/RCE Analysis