PuTTY window title escape character arbitrary command execution

Summary
PuTTY is a free SSH client. This version contains a flaw that may allow a malicious user to insert arbitrary commands and execute them. The issue is triggered when an attacker sends commands, preceded by terminal emulator escape sequences. It is possible that the flaw may allow arbitrary code execution resulting in a loss of integrity.
Solution
Upgrade to version 0.54 or newer