PCMan FTP Server Buffer Overflow Vulnerability in CCC Command Handler

A critical buffer overflow vulnerability has been identified in PCMan FTP Server version 2.0.7. The issue arises in the CCC Command Handler component, where an unknown functionality can be manipulated, potentially allowing for remote exploitation.

Impact

Exploitation of this vulnerability leads to a buffer overflow, which can commonly result in arbitrary code execution or causing a crash.

Reproduction

The vulnerability can be reproduced by sending a crafted CCC command that includes a payload designed to overflow the buffer. This can be done using a TCP connection to the FTP server's port 21. The payload should be carefully crafted to include the desired shellcode and overwrite the return address with a location that executes the shellcode, such as a 'JMP ESP' address.