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ChendoChap
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PS4 5.05 - 7.02 Kernel Exploit


Summary

In this project you will find a full implementation of the "ipv6 uaf" kernel exploit for the PlayStation 4 for firmwares 7.00 - 7.02. It will allow you to run arbitrary code as kernel, to allow jailbreaking and kernel-level modifications to the system. will launch the usual payload launcher (on port 9020).

This bug was originally discovered by Fire30, and subsequently found by Andy Nguyen

Implementations

Patches Included

The following patches are applied to the kernel: 1) Allow RWX (read-write-execute) memory mapping (mmap / mprotect) 2) Syscall instruction allowed anywhere 3) Dynamic Resolving (

sys_dynlib_dlsym
) allowed from any process 4) Custom system call #11 (
kexec()
) to execute arbitrary code in kernel mode 5) Allow unprivileged users to call
setuid(0)
successfully. Works as a status check, doubles as a privilege escalation.

Notes

  • The page will crash on successful kernel exploitation, this is normal
  • There are a few races involved with this exploit, losing one of them and attempting the exploit again might not immediately crash the system but stability will take a hit, upon seeing an '[ERROR] ...' alert it is best to reboot the system.
  • 6.xx's webkit side is occasionally unstable atm and may trigger a 'few' extra OOM's
  • the payload loader does not mmap at a static address, make sure payloads are made with this in mind.

Contributors

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