EUVD-2015-1280

Malware in sbrugna...

Apple IntelHD5000 Graphics Process Token Privilege Escalation Vulnerability

Summary A memory corruption vulnerability exists in the IntelHD5000 kernel extension when dealing with graphics resources inside of OSX 10.13.4. A library inserted into the VLC media application can cause an out-of-bounds access inside of the KEXT leading to a use after free and invalid memory...

Apple IntelHD5000 Graphics Delete Resource Privilege Escalation Vulnerability

Summary A memory corruption vulnerability exists in the IntelHD5000 kernel extension when dealing with graphics resources inside of OSX 10.13.4. A library inserted into the VLC media application can cause an out-of-bounds access inside of the KEXT leading to a use after free and invalid memory...

macOS Kernel - Use-After-Free Due to Lack of Locking in AppleEmbeddedOSSupportHostClient::registerNo

Exploit for macOS platform in category dos / poc / AppleEmbeddedOSSupportHost.kext is presumably involved in the communication with the OS running on the touch bar on new MBP models. Here's the userclient's registerNotificationPort method: text:0000000000002DE4 ;...

macOS 10.13 (17A365) - Kernel Memory Disclosure due to Lack of Bounds Checking in AppleIntelCapriCon

Exploit for macOS platform in category dos / poc / AppleIntelCapriController::getDisplayPipeCapability reads an attacker-controlled dword value from a userclient structure input buffer which it uses to index a small array of pointers to memory to copy back to userspace. There is no bounds checkin...

macOS 10.13 (17A365) - Kernel Memory Disclosure due to Lack of Bounds Checking in AppleIntelCapriController::getDisplayPipeCapability

macOS 10.13 17A365 - Kernel Memory Disclosure due to Lack of Bounds Checking in AppleIntelCapriController::getDisplayPipeCapability / AppleIntelCapriController::getDisplayPipeCapability reads an attacker-controlled dword value from a userclient structure input buffer which it uses to index a smal...

iOS/MacOS kernel double free due to IOSurfaceRootUserClient not respecting MIG ownership rules(CVE-2017-13861)

I have previously detailed the lifetime management paradigms in MIG in the writeups for: CVE-2016-7612 https://bugs.chromium.org/p/project-zero/issues/detail?id=926 and CVE-2016-7633 https://bugs.chromium.org/p/project-zero/issues/detail?id=954 If a MIG method returns KERNSUCCESS it means that th...

Apple macOS/iOS - Multiple Kernel Use-After-Frees due to Incorrect IOKit Object Lifetime Management in IOTimeSyncClockManagerUserClient

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1377 IOTimeSyncClockManagerUserClient provides the userspace interface for the IOTimeSyncClockManager IOService. IOTimeSyncClockManagerUserClient overrides the IOUserClient::clientClose method but it treats it like a destructor...

Apple macOSiOS - Kernel Double Free due to IOSurfaceRootUserClient not Respecting MIG Ownership Rules

Apple macOSiOS - Kernel Double Free due to IOSurfaceRootUserClient not Respecting MIG Ownership Rules I have previously detailed the lifetime management paradigms in MIG in the writeups for: CVE-2016-7612 https://bugs.chromium.org/p/project-zero/issues/detail?id=926 and CVE-2016-7633...

Apple macOS/iOS - Kernel Double Free due to IOSurfaceRootUserClient not Respecting MIG Ownership Rules

I have previously detailed the lifetime management paradigms in MIG in the writeups for: CVE-2016-7612 https://bugs.chromium.org/p/project-zero/issues/detail?id=926 and CVE-2016-7633 https://bugs.chromium.org/p/project-zero/issues/detail?id=954 If a MIG method returns KERNSUCCESS it means that th...

Apple Mac OSX Kernel - GeForce GPU Driver Stack Buffer Overflow

Apple Mac OSX Kernel - GeForce GPU Driver Stack Buffer Overflow / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=724 nvAPIClient::Escape is the sole external method of nvAcclerator userclient type 0x2a0. It implements its own method and parameter demuxing using the struct-in...

Apple Mac OSX Kernel - Null Pointer Dereference in AppleGraphicsDeviceControl

Apple Mac OSX Kernel - Null Pointer Dereference in AppleGraphicsDeviceControl / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=782 AppleGraphicsDeviceControlClient doesn't check that its pointer to its IOService at this+0xd8 is non-null before using it in all external methods. ...

Apple Mac OSX Kernel - Unchecked Array Index Used to Read Object Pointer Then Call Virtual Method in Nvidia Geforce Driver

Apple Mac OSX Kernel - Unchecked Array Index Used to Read Object Pointer Then Call Virtual Method in Nvidia Geforce Driver / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=709 nvDevice::ReleaseDeviceTexture is external method 0x10a of userclient 5 of the geforce IOAccelerator. ...

Apple Mac OSX - Kernel AppleKeyStore Use-After-Free

Exploit for macOS platform in category dos / poc / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=710 The AppleKeyStore userclient uses an IOCommandGate to serialize access to its userclient methods, however by racing two threads, one of which closes the userclient which frees...

Apple Mac OSX Kernel - Unchecked Array Index Used to Read Object Pointer Then Call Virtual Method in Nvidia Geforce Driver

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=709 nvDevice::ReleaseDeviceTexture is external method 0x10a of userclient 5 of the geforce IOAccelerator. It takes a single uint argument text:000000000001BCD2 mov r14d, esi ... text:000000000001BD08 and r14d, 7FFFFFFFh -- clear...

Apple Mac OSX - Kernel Unchecked Array Index Used to Read Object Pointer Then Call Virtual Method in

Exploit for macOS platform in category dos / poc / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=709 nvDevice::ReleaseDeviceTexture is external method 0x10a of userclient 5 of the geforce IOAccelerator. It takes a single uint argument text:000000000001BCD2 mov r14d, esi...

Apple Mac OSX - IOSCSIPeripheralDeviceType00 Userclient Type 12 Kernel NULL Dereference

Apple Mac OSX - IOSCSIPeripheralDeviceType00 Userclient Type 12 Kernel NULL Dereference / Source: https://code.google.com/p/google-security-research/issues/detail?id=562 Opening userclient type 12 of IOSCSIPeripheralDeviceType00 leads to an exploitable kernel NULL dereference. Tested on OS X 10.1...

Apple Mac OSX Kernel - Hypervisor Driver Use-After-Free

Apple Mac OSX Kernel - Hypervisor Driver Use-After-Free / Source: https://code.google.com/p/google-security-research/issues/detail?id=580 The hvspace lock group gets an extra ref dropped when you kill a process with an AppleHV userclient; one via IOService::terminateWorker calling the...

Apple Mac OSX - OSMetaClassBase::safeMetaCast in IOAccelContext2::connectClient NULL Dereference

/ Source: https://code.google.com/p/google-security-research/issues/detail?id=512 IOUserClient::connectClient is an obscure IOKit method which according to the docs is supposed to "Inform a connection of a second connection." In fact IOKit provides no default implementation and only a handful of...

Apple Mac OSX - IOSCSIPeripheralDeviceType00 Userclient Type 12 Kernel NULL Dereference

/ Source: https://code.google.com/p/google-security-research/issues/detail?id=562 Opening userclient type 12 of IOSCSIPeripheralDeviceType00 leads to an exploitable kernel NULL dereference. Tested on OS X 10.11 ElCapitan 15a284 on MacBookAir5,2 / // ianbeer // clang -o scsiperipheral...