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FreePBX < 2.2.1 VoIP Input Validation Vulnerabilities



The remote host is vulnerable to a buffer overflow.


The remote host is running the FreePBX administrative interface. FreePBX is an Asterisk derivative that includes a Voice Over IP (VoIP) server and an administrative web interface. The web interface is used to manage the VoIP services.

This version of FreePBX is vulnerable to flaws in the way that it handles 'CALLERID(name)' and 'CALLERID(num)'. While the details are unknown, it is alleged that an attacker will be able to possibly inject or execute code on the remote system.


Upgrade to version 2.2.1 or higher.