Adrian Pastor has reported a vulnerability in ATCOM AT-320ED IP Phone, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to an error within the session management. If a superuser logs into the web management console, the webserver accepts any request as long as the superuser's session is valid. This can be exploited to bypass the authentication process and e.g. allows the modification of certain settings.
The vulnerability is reported in firmware version 1.42 and 1.54. Other versions may also be affected.
Solution: Only log into the web management console from trusted network environments. Use a firewall to restrict access to the phone.
Provided and/or discovered by: Adrian Pastor
Original Advisory: http://milw0rm.com/exploits/3189
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Subject: ATCOM AT-320ED IP Phone Session Management Vulnerability
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