The Brizy Page Builder plugin <= 2.3.11 for WordPress allowed authenticated users to upload executable files to a location of their choice using the brizy_create_block_screenshot AJAX action. The file would be named using the id parameter, which could be prepended with "../" to perform directory traversal, and the file contents were populated via the ibsf parameter, which would be base64-decoded and written to the file. While the plugin added a .jpg extension to all uploaded filenames, a double extension attack was still possible, e.g. a file named shell.php would be saved as shell.php.jpg, and would be executable on a number of common configurations.
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Fri, 14 Feb 2025 18:15:00 +0000
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Status: PUBLISHED
Assigner: Wordfence
Published: 2021-10-14T15:56:57.210Z
Updated: 2025-02-14T18:11:15.472Z
Reserved: 2021-08-09T00:00:00.000Z
Link: CVE-2021-38346

Updated: 2024-08-04T01:37:16.544Z

Status : Modified
Published: 2021-10-14T16:15:09.317
Modified: 2024-11-21T06:16:51.843
Link: CVE-2021-38346

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