Two vulnerabilities have been identified in ProFTPD, which could be exploited by attackers to cause a denial of service or execute arbitrary commands.
The first flaw is due to a buffer overflow error in the "cmd_loop()" function [main.c] where the "cmd_buf_size" size of the buffer used to handle FTP commands sent by clients is not properly set to the size configured via the "CommandBufferSize" directive, which could be exploited by attackers to crash a vulnerable application via a specially crafted FTP command.
The second issue is due to a buffer overflow error in the "sreplace() " [support.c] function when processing malformed requests, which could be exploited by a remote attacker to execute arbitrary commands with elevated privileges.
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