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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References
History
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MITRE
Status: PUBLISHED
Assigner: Wordfence
Published: 2021-10-14T15:56:57.210154Z
Updated: 2024-09-16T18:08:23.450Z
Reserved: 2021-08-09T00:00:00
Link: CVE-2021-38346
Vulnrichment
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NVD
Status : Modified
Published: 2021-10-14T16:15:09.317
Modified: 2024-11-21T06:16:51.843
Link: CVE-2021-38346
Redhat
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