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Random Segmentation Fault Crashes.. Exploit?


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xxlap1xx
Member
Join Date: Oct 2011
Old 02-23-2012 , 10:11   Random Segmentation Fault Crashes.. Exploit?
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Hey guys.. My servers been crashing under segmentation fault error randomly for weeks now.. Whenever the server crashes, it'll create a dmp file in my /tmp/dump/ folder. But the thing is that I couldn't find a way to open that *.dmp file.

My server is on the latest build, and I'm also using the autobuyfix plugin, but the server is still crashing, randomly.. Are there any new exploits out there that can even crash the latest build?

I'll summit a screen shot when I get home later if it crashed again. But there are no details being given at all, except the CrashID, where the dump file is being generated.. Are there anyway to get my server to show more details about the crash? Maybe a debug command through startup line?

Things I'd tried so far
- autobuyfix plugin
- Latest 3.2.7 kernel stable
- Swapped different sticks of rams
- metamod -p
- disabled csstats

I'd also heard that those crashers can crash the server if there are weapons restricted too.. is this true?

Anyways, please shed some light on me guys.. I tried almost everything I can but still no luck..

Thanks in advance.
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kostov
Member
Join Date: Jan 2010
Location: Bulgaria, Sofia
Old 02-23-2012 , 10:34   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #2

Yes, there is a new exploit.

I can give you protection for linux. Protection is a simple command for iptables
PHP Code:
iptables -I INPUT -p udp -m length --length 222 -j DROP 
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xxlap1xx
Member
Join Date: Oct 2011
Old 02-23-2012 , 11:16   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #3

Quote:
Originally Posted by kostov View Post
Yes, there is a new exploit.

I can give you protection for linux. Protection is a simple command for iptables
PHP Code:
iptables -I INPUT -p udp -m length --length 222 -j DROP 
Thanks.. but how do I apply this fix to the server? Is this something for my router? Or it's for the startup command line? Sorry for being complete new
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Arkshine
AMX Mod X Plugin Approver
Join Date: Oct 2005
Old 02-23-2012 , 11:24   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #4

Are you using dproto ? If so, it's most likely the origin of the flaw.
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kostov
Member
Join Date: Jan 2010
Location: Bulgaria, Sofia
Old 02-23-2012 , 11:25   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #5

Open the Linux console, you enter with root privileges and type commands into the terminal

Quote:
Originally Posted by Arkshine View Post
Are you using dproto ? If so, it's most likely the origin of the flaw.
A new exploit has nothing to do with dproto. The error comes from the engine (engine_i686.so and swds.dll)

Last edited by kostov; 02-23-2012 at 11:28.
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Arkshine
AMX Mod X Plugin Approver
Join Date: Oct 2005
Old 02-23-2012 , 11:49   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #6

Dproto patches many things in memory for engine. It would not be suprising that a new exploit finds a flaw from there.
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neoRT
Senior Member
Join Date: May 2011
Old 02-23-2012 , 11:54   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #7

Quote:
Originally Posted by kostov View Post
Yes, there is a new exploit.
What new exploit? Are you talking about the one released last month, Jo's?
If you are, that exploit is just for windows servers that are using dproto. Steam servers can't be crashed.

Last edited by neoRT; 02-23-2012 at 11:59.
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xxlap1xx
Member
Join Date: Oct 2011
Old 02-23-2012 , 12:05   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #8

Quote:
Originally Posted by kostov View Post
Open the Linux console, you enter with root privileges and type commands into the terminal
Thanks.. I'll give that a try when I get home later.. Will report back later for results.
xxlap1xx is offline
kostov
Member
Join Date: Jan 2010
Location: Bulgaria, Sofia
Old 02-23-2012 , 12:30   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #9

Quote:
Originally Posted by neoRT View Post
What new exploit? Are you talking about the one released last month, Jo's?
If you are, that exploit is just for windows servers that are using dproto. Steam servers can't be crashed.
New exploit is 10th February and says Jo's v2 and works on steam servers
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zeus
Senior Member
Join Date: Jul 2008
Old 02-23-2012 , 14:13   Re: Random Segmentation Fault Crashes.. Exploit?
Reply With Quote #10

Does it affect linux servers too?
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