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Vulnerability CVE-2021-38346
Published: 2021-10-14
Description: |
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. |
Type:
CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))
CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
6.5/10 |
6.4/10 |
8/10 |
Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
Single time |
Confidentiality impact |
Integrity impact |
Availability impact |
Partial |
Partial |
Partial |
References: |
https://www.wordfence.com/blog/2021/10/multiple-vulnerabilities-in-brizy-page-builder-plugin-allow-site-takeover/
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