WordPress through 4.9.6 allows Author users to execute arbitrary code by leveraging directory traversal in the wp-admin/post.php thumb parameter, which is passed to the PHP unlink function and can delete the wp-config.php file. This is related to missing filename validation in the wp-includes/post.php wp_delete_attachment function. The attacker must have capabilities for files and posts that are normally available only to the Author, Editor, and Administrator roles. The attack methodology is to delete wp-config.php and then launch a new installation process to increase the attacker's privileges.
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References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2018-06-26T20:00:00
Updated: 2024-08-05T08:45:02.465Z
Reserved: 2018-06-26T00:00:00
Link: CVE-2018-12895
Vulnrichment
No data.
NVD
Status : Modified
Published: 2018-06-26T20:29:00.273
Modified: 2024-11-21T03:46:03.427
Link: CVE-2018-12895
Redhat
No data.