Troubleshooting AFL Fuzzing Problems | Ep. 03

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Published on May 22, 2021 5:24:08 PM ● Video Link: https://www.youtube.com/watch?v=W2kZnmchJhI

Duration: 8:22

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We are using afl to fuzz the sudo binary, but we run into a lot more issues. In this video we are troubleshooting some issues and come up with solutions.

Article version: https://liveoverflow.com/troubleshooting-afl-fuzzing-problems/
Grab the files: https://github.com/LiveOverflow/pwnedit

Correction: afl can fuzz setuid process, I was just dumb. More details in this video: https://youtu.be/TLa2VqcGGEQ?t=323

Episode 03:
00:00 - Intro
00:30 - afl: No more free CPU cores
01:10 - Patching execs in target binary
01:47 - afl: Unable to create file. No space left on device
03:06 - afl Trick: Find non-memory corruption issues
04:22 - Fuzzing setuid sudo as root
06:38 - Next fuzz attempt

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