Messages in this thread | | | Date | Mon, 30 Nov 1998 14:42:53 -0500 (EST) | From | Luis Costabile <> | Subject | imap and popper |
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Probably this has been asked before so forgive me.
Is there a bug in either popper or imapd that lets someone get root access? Someone got into my linux box and I suspect they did by overflowing? popper and/or imapd. There was no damage done that I have noticed so maybe I was lucky. I have all my log files etc, but will keep the post short unless someone wants all the details.
They didn't do any harm from what I can see but I disabled those ports for now and changed all passwords, got rid of the non-welcome accounts etc.
Here is a netstat -na the offender is 38.29.66.182 connecting to port 110.
Active Internet connections (including servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 35 0 206.47.27.250:110 38.29.66.182:20811 CLOSE_WAIT tcp 0 2 206.47.27.250:8301 38.29.66.182:113 SYN_SENT
Here is my /var/log/messages file (just took some clips)
Nov 28 08:00:00 cpu1769 tcpd[8609]: connect from 38.29.66.182 Nov 28 08:00:31 cpu1769 last message repeated 111 times Nov 28 08:01:32 cpu1769 last message repeated 207 times Nov 28 08:02:33 cpu1769 last message repeated 218 times
Now, here is /var/log/mail
Nov 28 07:11:57 cpu1769 popper[8574]: @ip182.tucson6.az.pub-ip.psi.net: -ERR POP EOF received Nov 28 07:13:52 cpu1769 imapd[8575]: command stream end of file, while reading line user=??? host=ip182.tucson6.az.pub-ip.psi.net
Nov 28 07:29:26 cpu1769 popper[8585]: @ip182.tucson6.az.pub-ip.psi.net: -ERR POP EOF received Nov 28 07:29:29 cpu1769 popper[8586]: [truncated] @ip182.tucson6.az.pub-ip.psi.net: -ERR Unknown command: "^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P ^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^ P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P ^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^P^ P^P^P^P^P^P^P
these messages repeat and repeat...
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