[FD] Zen Cart 1.5.4 - Code Execution and Information Leak

Zen Cart 1.5.4: Code Execution and Information Leak Security Advisory – Curesec Research Team 1. Introduction Affected Product: Zen Cart 1.5.4 Fixed in: partial fix via patch Partial Patch Link: http://ift.tt/1iNNtO2 Vendor Contact: security@zen-cart.com Vulnerability Type: Code Execution and Information Leak Remote Exploitable: Yes Reported to vendor: 08/13/2015 Disclosed to public: 09/14/2015 Release mode: Coordinated release CVE: n/a Credits Tim Coen of Curesec GmbH 2. Vulnerability Description: Arbitrary File Upload When uploading an image for a record, there is no check as to what type or extension the file has, with the exception that it cannot be a htaccess file. These files are stored in the /image directory, which is protected from code execution via a htaccess file if the server is not prevented from parsing htaccess files correctly (which may for example be the case for speed and security reasons). An attacker can perform a directory traversal via the img_dir POST parameter to store an uploaded image outside of this protected directory, thus gaining code execution or overwriting sensitive files, even if the image directory is protected by the htaccess file. The recommendations for denying code execution listed in the help-page "Important Site Security Recommendations" - such as protecting the /image and /html_includes folders against file modification and execution - do not protect against code execution via this attack. This problem exists for other classes performing file operations as well, such as media_manager.php, manufacturers.php, attributes_controller.php, mail.php, new_product_preview.php, record_company.php, product_types.php, and categories.php. Please note that an admin account is required that has the right to edit one of the items that provide an image upload, such as the right "Catalog: Product Types" or "Extra: Record Artists" 3. Proof of Concept: Arbitrary File Upload The request to upload a file may look like this: POST /zen-cart-v1.5.4-12302014/admin2/record_artists.php?page=1&mID=1&action=save HTTP/1.1 Host: localhost

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