System Administration Guide
Chapter 5, Maintaining system security

Terminal escape sequences

Terminal escape sequences

Many terminals and terminal emulation programs provide features that can be exploited to circumvent system security. These features are typically accessed by so-called ``escape sequences,'' sequences of characters in output text that have special meaning to the terminal. Typical attacks reconfigure the terminal in unexpected ways, or cause input to be sent to the system as if typed by the user.

If you are using terminals that provide these features, and the features can be disabled, you should disable them when you do not need them, particularly when executing system maintenance functions.

See the sections on the terminal subsystem in the subsystem(M) manual page for more information about escape sequences.