nullcon Delhi 2012: Day 2's action


DTMF fuzzing: Highlighting vulnerabilities in implementation of DTMF detection algorithms

Rahul Sasi presented his paper on DTMF input processing algorithms (DSP) often embedded in PBX, IVR, telephone routers and other devices that process DTMF input. He demonstrated how attackers could trigger exception in DTMF processing algorithms, and crash application servers with a single phone call. He also showed DTMF attacks on phone banking, tele-voting, and customer support applications using DTMF.

Executive brief for this session (PDF)

<<In case you missed Day 1’s action, catch it here.




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