Summary A local user may be able to cause unexpected system termination or read kernel memory. Details In the function IOHIDEventServiceFastPathUserClient::getSharedMemorySize, the ClientObject (Offset 0xE0 of the user client) is given to a function which assumes it is initialised (It should be initialised via external method 0 — IOHIDEventServiceFastPathUserClient::_open). Calling […]
Researchers: Adam Donenfeld (@doadam) Relevant Operating Systems: iOS, tvOS and watchOS CVE: CVE-2018-4109 As a part of zLabs platform research team (and as a researcher in general), I often find myself wandering in IDA, reversing random pieces of code. In this blog post, I’m going to show a […]
Researchers: Adam Donenfeld (@doadam) Relevant Operating Systems: iOS, tvOS and watchOS CVE: CVE-2018-4282 Summary As a part of our ongoing mobile platform research, zLabs recently discovered a read-out-of-bounds vulnerability in the AppleT8015PPM.kext that allows an attacker to read out of its supplied structureInput. The read data is being used […]
Follow @doadam Following my previous post, I’m releasing ziVA: a fully chained iOS kernel exploit that (should) work on all the iOS devices running iOS 10.3.1 or earlier. The exploit itself consists of multiple vulnerabilities that were discovered all in the same module: AppleAVEDriver. The exploit will be covered in […]
As part of zLab’s platform research team, I’ve tried to investigate an area of the kernel that wasn’t thoroughly researched before. After digging into some of Apple’s closed-source kernel modules, one code chunk led to another and I’ve noticed a little-known module, which I’ve never seen before, called AppleAVE. AppleAVE was written neglecting basic security […]