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CmdFix - CS:GO Server Crash Exploit Fix


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GoD-Tony
Veteran Member
Join Date: Jul 2005
Old 06-29-2016 , 07:58   CmdFix - CS:GO Server Crash Exploit Fix
Reply With Quote #1

This extension fixes a known crash that can occur (usually by malicious clients) when CS:GO's sv_clamp_unsafe_velocities ConVar is set to 0, which is pretty much required for surf servers.

It is similar in operation to the closed-source fix by backwards here, https://forums.alliedmods.net/showpo...9&postcount=39

More info about the crash is at https://forums.alliedmods.net/showthread.php?t=284184

* New in v1.1 - added convar cmdfix_kick to disable kicking upon detection.

* Updated gamedata: https://forums.alliedmods.net/showpo...9&postcount=39
Attached Files
File Type: zip cmdfix.zip (176.2 KB, 463 views)
File Type: zip cmdfix-src.zip (4.2 KB, 201 views)
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Last edited by GoD-Tony; 12-01-2016 at 08:27. Reason: v1.1
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sneaK
SourceMod Moderator
Join Date: Feb 2015
Location: USA
Old 10-06-2016 , 13:58   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #2

Glad to see this get its own thread! This extension has been key to protecting my servers from exploiters since June, I'm really happy this is getting more attention and hope this helps all.

As always, great work Tony and a big thanks for taking the time to make this promptly available to the community.
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Last edited by sneaK; 10-06-2016 at 14:04.
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Puppetmaster
Senior Member
Join Date: Jun 2015
Location: Probably at a computer.
Old 10-06-2016 , 17:48   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #3

Thanks!
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primofernando
Member
Join Date: Jun 2014
Old 10-06-2016 , 20:45   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #4

Thanks GoD-Tony
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Vampires66
Junior Member
Join Date: May 2010
Old 10-07-2016 , 02:46   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #5

Linux Debian 7

L 10/06/2016 - 18:44:29: SourceMod error session started
L 10/06/2016 - 18:44:29: Info (map "de_dust2") (file "errors_20161006.log")
L 10/06/2016 - 18:44:29: [SM] Unable to load extension "cmdfix.ext": Could not find interface: IGameHelpers
L 10/06/2016 - 18:582: Error log file session closed.
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sneaK
SourceMod Moderator
Join Date: Feb 2015
Location: USA
Old 10-07-2016 , 03:08   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #6

Quote:
Originally Posted by Vampires66 View Post
Linux Debian 7

L 10/06/2016 - 18:44:29: SourceMod error session started
L 10/06/2016 - 18:44:29: Info (map "de_dust2") (file "errors_20161006.log")
L 10/06/2016 - 18:44:29: [SM] Unable to load extension "cmdfix.ext": Could not find interface: IGameHelpers
L 10/06/2016 - 18:582: Error log file session closed.
This extension requires SM 1.8 or higher
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Vampires66
Junior Member
Join Date: May 2010
Old 10-07-2016 , 09:57   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #7

Quote:
Originally Posted by blackhawk74 View Post
This extension requires SM 1.8 or higher
Thanks i update sourcemod and its work now
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Vampires66
Junior Member
Join Date: May 2010
Old 10-07-2016 , 09:59   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #8

Its possible add log cvar for log attackers in txt file ex crash.txt ?
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sneaK
SourceMod Moderator
Join Date: Feb 2015
Location: USA
Old 10-07-2016 , 11:01   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #9

Quote:
Originally Posted by Vampires66 View Post
Its possible add log cvar for log attackers in txt file ex crash.txt ?
It is logged, under /addons/sourcemod/logs/L<date>.log

Example logging:

Code:
L 10/01/2016 - 22:54:30: [CMDFIX] User (ID: STEAM_1:1:xxxxxx | IP: xx:27005) was kicked for sending a corrupt user cmd.
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dilalmon
AlliedModders Donor
Join Date: Apr 2013
Old 10-09-2016 , 19:33   Re: CmdFix - CS:GO Surf Server Crash Exploit Fix
Reply With Quote #10

This also seems to kick valid clients.
Is there any way to block the command and not kick them?
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