Apple macOS 10.14.5 iOS 12.3 XNU - Wild-read due to bad cast in stf_ioctl

Apple macOS 10.14.5 iOS 12.3 XNU - Wild-read due to bad cast in stfioctl / Reproduction Tested on macOS 10.14.3: $ clang -o stfwildread stfwildread.cc $ ./stfwildread Explanation SIOCSIFADDR is an ioctl that sets the address of an interface. The stf interface ioctls are handled by the stfioctl...

macOS < 10.14.5 / iOS < 12.3 XNU - Wild-read due to bad cast in stf_ioctl Exploit

macOS ifaaddr-safamily != AFINET6 // - crash here IFAUNLOCKifa; error = EAFNOSUPPORT; break; Note that IFALOCK is called on user-provided data; it appears that there is an opportunity for memory corruption a controlled write when using indirect mutexes via LCKMTXTAGINDIRECT see lckmtxlockslow...

Apple macOS < 10.14.5 / iOS < 12.3 XNU - Wild-read due to bad cast in stf_ioctl

/ Reproduction Tested on macOS 10.14.3: $ clang -o stfwildread stfwildread.cc $ ./stfwildread Explanation SIOCSIFADDR is an ioctl that sets the address of an interface. The stf interface ioctls are handled by the stfioctl function. The crash occurs in the following case where a struct ifreq is re...