Apple MacOS 32-Bit Syscall Exit Kernel Register Leak(CVE-2017-2509)

The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To return to userspace, unixsyscall in bsd/dev/i386/systemcalls.c calls threadexceptionreturn in osfmk/x8664/locore.s, which in turn...

Apple macOS - 32-bit syscall exit Kernel Register Leak Exploit

Exploit for macOS platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1149 The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To return to...

Apple macOS - 32-bit syscall exit Kernel Register Leak

Apple macOS - 32-bit syscall exit Kernel Register Leak Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1149 The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To...

Apple macOS - '32-bit syscall exit' Kernel Register Leak

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1149 The XNU kernel, when compiled for a x86-64 CPU, can run 32-bit x86 binaries in compatibility mode. 32-bit binaries use partly separate syscall entry and exit paths. To return to userspace, unixsyscall in...

XNU kernel UaF due to lack of locking in set_dp_control_port (CVE-2016-7644)

setdpcontrolport is a MIG method on the hostprivport so this bug is a root-kernel escalation. kernreturnt setdpcontrolport hostprivt hostpriv, ipcportt controlport if hostpriv == HOSTPRIVNULL return KERNINVALIDHOST; if IPVALIDdynamicpagercontrolport ipcportreleasesenddynamicpagercontrolport;...

iOS 10.1.1 / macOS 10.12 16A323 XNU Kernel - set_dp_control_port Lack of Locking Use-After-Free Vuln

Exploit for multiple platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=965 setdpcontrolport is a MIG method on the hostprivport so this bug is a root-kernel escalation. kernreturnt setdpcontrolport hostprivt hostpriv, ipcportt controlport if hostpriv...

Apple macOS 10.12 16A323 XNU Kernel / iOS 10.1.1 - 'set_dp_control_port' Lack of Locking Use-After-Free

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=965 setdpcontrolport is a MIG method on the hostprivport so this bug is a root-kernel escalation. kernreturnt setdpcontrolport hostprivt hostpriv, ipcportt controlport if hostpriv == HOSTPRIVNULL return KERNINVALIDHOST; if...

Apple macOS 10.12 16A323 XNU Kernel iOS 10.1.1 - set_dp_control_port Lack of Locking Use-After-Free

Apple macOS 10.12 16A323 XNU Kernel iOS 10.1.1 - setdpcontrolport Lack of Locking Use-After-Free Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=965 setdpcontrolport is a MIG method on the hostprivport so this bug is a root-kernel escalation. kernreturnt setdpcontrolport hostpri...

task_t considered harmful

Posted by Ian Beer, Project Zero This post discusses a design issue at the core of the XNU kernel which powers iOS and MacOS. Apple have shipped two iterations of mitigations followed yesterday by a large refactor in MacOS 10.12.1/iOS 10.1. We’ll look at the bugs, how they can be exploited to...

Apple Mac OSX / iOS - Unsandboxable Kernel Code Exection Due to iokit Double Release in IOKit

Exploit for multiple platform in category dos / poc Source: https://code.google.com/p/google-security-research/issues/detail?id=620 I wanted to demonstrate that these iOS/OS X kernel race condition really are exploitable so here's a PoC which gets RIP on OS X. The same techniques should transfer...

Apple Mac OSX iOS - Unsandboxable Kernel Code Exection Due to iokit Double Release in IOKit

Apple Mac OSX iOS - Unsandboxable Kernel Code Exection Due to iokit Double Release in IOKit Source: https://code.google.com/p/google-security-research/issues/detail?id=620 I wanted to demonstrate that these iOS/OS X kernel race condition really are exploitable so here's a PoC which gets RIP on OS...

The vulnerability of the iOS operating system, which allows a hacker to trigger a service failure

The vulnerability of the XNU kernel component of the iOS operating system exists due to insufficient checking of input data. Exploiting this vulnerability allows a malicious actor to cause service failure by sending a TCP packet containing a specially crafted header...

Apple Mac OS X Lion Kernel xnu Privilege Escalation

/ Apple Mac OS X Lion Kernel Notes: This exploit leverage a stack overflow vulnerability to escalate privileges. The vulnerable function nfsconvertoldnfsargs does not verify the size of a user-provided argument before copying it to the stack. As a result by passing a large size, a local user can...

Apple Mac OSX (Lion) Kernel xnu-1699.32.7 except xnu-1699.24.8 NFS Mount - Local Privilege Escalation

/ Apple Mac OS X Lion Kernel Notes: This exploit leverage a stack overflow vulnerability to escalate privileges. The vulnerable function nfsconvertoldnfsargs does not verify the size of a user-provided argument before copying it to the stack. As a result by passing a large size, a local user can...

CVE-2013-3954

The posixspawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to 1 cause a denial of service panic via a size value that is inconsistent with a header count field, or 2 obtain sensitive...

CVE-2013-3952

The fillpipeinfo function in bsd/kern/syspipe.c in the XNU kernel in Apple Mac OS X 10.8.x allows local users to defeat the KASLR protection mechanism via the PROCPIDFDPIPEINFO option to the procinfo system call for a kernel pipe handle...

CVE-2013-3949

The posixspawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not prevent use of the POSIXSPAWNDISABLEASLR and POSIXSPAWNALLOWDATAEXEC flags for setuid and setgid programs, which allows local users to bypass intended access restrictions via a wrapper program that calls the...

Design/Logic Flaw

The machportspaceinfo function in osfmk/ipc/machdebug.c in the XNU kernel in Apple Mac OS X 10.8.x does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted call...

Design/Logic Flaw

The posixspawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not prevent use of the POSIXSPAWNDISABLEASLR and POSIXSPAWNALLOWDATAEXEC flags for setuid and setgid programs, which allows local users to bypass intended access restrictions via a wrapper program that calls the...

Design/Logic Flaw

The posixspawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to 1 cause a denial of service panic via a size value that is inconsistent with a header count field, or 2 obtain sensitive...