Re: [exim] Exim (aoom) named in context of new TLS cross-protocol attack

2021-06-11 Thread Wolfgang Breyha via Exim-users
> ... and here is the EXIM EXPLOIT :
> https://github.com/RUB-NDS/alpaca-code/blob/master/exploits/smtp/02-exim.md

That's interesting because I expected a
503 no greeting received yet
if a throw a "mail from:..." to Exim before EHLO/HELO. But in the case the
 address given is invalid it is indeed
501 alert(1);: malformed address: alert(1); may
not follow 
without prior greeting.

According to debug +all output there is no way to prevent that by ACL
because none is called in this case
mail from: