Description
This module exploits a buffer overflow in UltraVNC Viewer 1.0.2 Release.
If a malicious server responds to a client connection indicating a minor protocol version of 14 or 16, a 32-bit integer is subsequently read from the TCP stream by the client and directly provided as the trusted size for further reading from the TCP stream into a 1024-byte character array on the stack.
Module options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/windows/vnc/ultravnc/viewer_bofmsf undefined(viewer_bof) > show actions ...actions...msf undefined(viewer_bof) > set ACTION < action-name >msf undefined(viewer_bof) > show options ...show and set options...msf undefined(viewer_bof) > runPrioritise with Active Threat Intelligence
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