2 ms·
the key "feature" of the exploit was the ability to send messages anonymously. the unix commands "write" and "wall" allow you to send a message to any users ter
by em-bee 3y ago
the key "feature" of the exploit was the ability to send messages anonymously. the unix commands "write" and "wall" allow you to send a message to any users terminal.
apparently "wall" has a switch "-n" to hide the sender
https://unix.stackexchange.com/questions/99460/sending-messages-to-another-user https://unix.stackexchange.com/questions/99460/sending-messa...
for windows there was "net send" which could be exploited by a tool called NetSendFaker, but this was 1991, so i doubt that already existed.
- yencabulator 3y agoThere was a time on some UNIXes where you could just write to other people's ttys, no write/wall needed, just echo >/dev/... Making write/wall sgid, and restricting tty write access to that group, was a significant security upgrade back in the day.