**General Details**
Affected Product: Conceptronic camera CIPCAMPTIWL
Tested Firmware:21.37.2.49
Tested Web UI Firmware:0.61.4.18
Assigned CVE: CVE-2013-7204
CVSSv2 Base Score:5.8(AV:N/AC:M/AU:N/C:P/I:P/A:N)
Vulnerability Type: Cross-Site Request Forgery [CWE-352]
Solution Status: Not Fixed
Vendor Notification Timeline:-23/12/2013: Contacting with technical support through their web
form http://www.conceptronic.net/supcon.php?action=init
-23/12/2013: Contacting with general information email addres
(info@conceptronic.net) to inform about the vulnerability and request
suitable security or technical contact to send the complete details of
the CSRF.-25/12/2013: Contacting with public twitter accounts
@conceptronicand @conceptronic_es to request suitable security or
technical contact to send the complete details of the CSRF.-28/12/2013: Recontacting the technical support.-28/12/2013: Recontacting general information address
info@conceptronic.net.-02/01/2014: Trying to conntact with security@conceptronic.net y
vulnerabilities@conceptronic.net but they are non existent addresses.-03/01/2014: Involve Inteco CERT in the notification proccess.-08/01/2014: Inteco confirms that there is still no response from
Conceptronic.None of the comunication atempts with the vendor received a response,
so I'm publishing the advisory to warn users and confirm the
vulnerability with you.**Vulnerabilitty details**
The CSRF is present in the CGI formulary used to create and modify
users of the web interface of the camera (/set_users.cgi). This CSRF
would allow a malicious attacker to create users in the camera web
interface (including administrator users)if he is able to lure the
legitimate administrator of the camera to visit a web controlled by
the attacker.
An example of the process to exploit this vulnerability:1- A webcam administrator is already logged in the camera web interface.2- A malicious user knows it and send a link to this administrator
pointing to a web controlled by this attacker
(http://example.com/conceptronic_csrf.html). In this web, the attacker
placed an image with the following code:<img alt="csrf image"
src="http://<victim_camera_server>/set_users.cgi?next_url=rebootme.htm&user1=attacker&pwd1=attacker&pri1=2&user2=&pwd2=&pri2=0&user3=&pwd3=&pri3=0&user4=&pwd4=&pri4=0&user5=&pwd5=&pri5=0&user6=&pwd6=&pri6=0&user7=&pwd7=&pri7=0&user8=&pwd8=&pri8=0">3- The webcam administrator visit the link.4- The page http://example.com/test_csrf.html tries to load the image
by making a GET request to the pointed URL, thus, making the
legitimate administrator to create a new user identified by "attacker"and password "attacker".
A video was uploaded to youtube showing this behaviour:
https://www.youtube.com/watch?v=URXEe_VRc74
This issue can be fixed by adding an additional step to the user
creation CGI, either requesting the administrator password again
before creating/modifying any user or creating a hidden random token
for each form (https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF)_Prevention_Cheat_Sheet)--
Felipe Molina de la Torre
