Can you still trust your network card? - Agence nationale de la ...

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The vulnerability Crash analysis Proof of concept code injection (2/2) stage 2 ◮ size virtually unlimited; ◮ sent like a normal packet before the exploit; ◮ prepended by a magic number so stage 1 can find it. Now the attacker can: ◮ run arbitrary code on the RX RISC; ◮ provide new code using simple packets; ◮ rewrite the firmware if needed; ◮ ... SGDSN/ANSSI – http://www.ssi.gouv.fr/trustnetworkcard 40/51
The vulnerability Crash analysis Stage 2 nop nop nop nop addiu $1,$1, 1 look for magic Username Heap number address and jump to it magic number IP Packet (stage 2) Scratchpad memory SGDSN/ANSSI – http://www.ssi.gouv.fr/trustnetworkcard 41/51
Page 1 and 2: Can you still trust your network ca
Page 3 and 4: Impacts on security If an attacker
Page 5 and 6: What won’t be described today Thi
Page 7 and 8: Network interface controller The Ne
Page 9 and 10: Network interface controller The Ne
Page 11 and 12: Remote administration protocols ASF
Page 17 and 18: Remote administration protocols RMC
Page 19 and 20: Remote administration protocols RMC
Page 21 and 22: Remote administration protocols Sum
Page 23 and 24: Protocol analysis Protocol security
Page 25 and 26: Protocol analysis Implementation pr
Page 27 and 28: The vulnerability Instrumenting the
Page 37 and 38: The vulnerability Crash analysis Ch
Page 39: The vulnerability Crash analysis Ex
Page 43 and 44: Real impact What can be done in the
Page 45 and 46: Real impact Controlling the host Us
Page 47 and 48: Real impact Controlling the host De
Page 49 and 50: Real impact Controlling the host Co
Page 51: Real impact Controlling the host Qu

Can you still trust your network card? - Agence nationale de la ...

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