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"Windows Kernel - NULL Pointer Dereference in nt!MiOffsetToProtos While Parsing Malformed PE File"

Author

Exploit author

"Google Security Research"

Platform

Exploit platform

windows

Release date

Exploit published date

2019-10-10

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We have encountered a Windows kernel crash in nt!MiOffsetToProtos while trying to load a malformed PE image into the process address space as a data file (i.e. LoadLibraryEx(LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE)). An example crash log generated after triggering the bug is shown below:

--- cut ---
*** Fatal System Error: 0x0000003b
                       (0x00000000C0000005,0xFFFFF8006F0860C4,0xFFFFD20AD8E1E290,0x0000000000000000)

Break instruction exception - code 80000003 (first chance)

A fatal system error has occurred.
Debugger entered on first try; Bugcheck callbacks have not been invoked.

A fatal system error has occurred.

For analysis of this file, run !analyze -v
nt!DbgBreakPointWithStatus:
fffff800`6f1c46a0 cc              int     3
1: kd> !analyze -v

*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

SYSTEM_SERVICE_EXCEPTION (3b)
An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff8006f0860c4, Address of the instruction which caused the bugcheck
Arg3: ffffd20ad8e1e290, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.

[...]

CONTEXT:  ffffd20ad8e1e290 -- (.cxr 0xffffd20ad8e1e290)
rax=00000000000000a2 rbx=ffffab829154f420 rcx=0000000000000000
rdx=0000000000000002 rsi=0000000000000000 rdi=ffffab828fb6f690
rip=fffff8006f0860c4 rsp=ffffd20ad8e1ec80 rbp=000000000000000b
 r8=ffffd20ad8e1ed90  r9=ffffab828fb6f690 r10=ffffab828fb6f690
r11=ffffe601c2e7f7b0 r12=0000000001000000 r13=0000000000000002
r14=000000000000a008 r15=ffffd20ad8e1ed90
iopl=0         nv up ei pl zr na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00050246
nt!MiOffsetToProtos+0x324:
fffff800`6f0860c4 8b562c          mov     edx,dword ptr [rsi+2Ch] ds:002b:00000000`0000002c=????????
Resetting default scope

[...]

STACK_TEXT:  
ffffd20a`d8e1ec80 fffff800`6f62a3f9 : ffffab82`8fb6f6d0 ffffab82`9154f420 00000000`00000048 ffffab82`8fb6f690 : nt!MiOffsetToProtos+0x324
ffffd20a`d8e1ed60 fffff800`6f6d6105 : ffffab82`9154f420 ffffd20a`d8e1efb0 ffffd20a`d8e1ef50 00000000`0000b000 : nt!MiLogRelocationRva+0x29
ffffd20a`d8e1edb0 fffff800`6f5fc56a : ffffd20a`d8e1f180 ffffd20a`d8e1f180 ffffd20a`d8e1efb0 ffffd20a`d8e1f180 : nt!MiParseComImage+0xd9
ffffd20a`d8e1eeb0 fffff800`6f5dca20 : ffffab82`9154f420 ffffd20a`d8e1f180 ffffd20a`d8e1f180 ffffab82`9154f3f0 : nt!MiCreateNewSection+0x2b6
ffffd20a`d8e1f010 fffff800`6f5dcd24 : ffffd20a`d8e1f040 ffffe601`c3b87f40 ffffab82`9154f420 00000000`00000000 : nt!MiCreateImageOrDataSection+0x2d0
ffffd20a`d8e1f100 fffff800`6f5dc37f : 00000000`11000000 ffffd20a`d8e1f4c0 00000000`00000001 00000000`00000002 : nt!MiCreateSection+0xf4
ffffd20a`d8e1f280 fffff800`6f5dc110 : 00000005`e1478f48 00000000`00000005 00000000`00000000 00000000`00000001 : nt!MiCreateSectionCommon+0x1ff
ffffd20a`d8e1f360 fffff800`6f1ce115 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!NtCreateSection+0x60
ffffd20a`d8e1f3d0 00007ffb`2815c9a4 : 00007ffb`25251ae7 00000000`00000000 00000000`00000001 40b28496`f324e4f9 : nt!KiSystemServiceCopyEnd+0x25
00000005`e1478ed8 00007ffb`25251ae7 : 00000000`00000000 00000000`00000001 40b28496`f324e4f9 feafc9c1`1796ffa1 : ntdll!NtCreateSection+0x14
00000005`e1478ee0 00007ffb`25255640 : 0000019b`db947d00 00000024`00000000 00007ffb`26202770 00000000`00000022 : KERNELBASE!BasepLoadLibraryAsDataFileInternal+0x2e7
00000005`e1479110 00007ffb`2523c41d : 0000019b`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : KERNELBASE!LoadLibraryExW+0xe0
00000005`e1479180 00007ffb`272503d1 : 0000019b`db9497c0 00000000`00000000 0000019b`db948c30 00007ffb`27266d85 : KERNELBASE!GetFileVersionInfoSizeExW+0x3d
00000005`e14791e0 00007ffb`2725035c : 00000000`00000000 00007ffb`257610ff 0000019b`db9497c0 00000005`e1479530 : shell32!_LoadVersionInfo+0x39
00000005`e1479250 00007ffb`257dc1c1 : 00000000`00000000 00000000`00000000 ffffffff`fffffffe 00000000`00000000 : shell32!CVersionPropertyStore::Initialize+0x2c

[...]
--- cut ---

The direct cause of the crash is an attempt to read from a near-zero address. As the address does not seem to be controlled, and NULL page mappings are prohibited in modern systems (except for when NTVDM is enabled on 32-bit platforms), we classify it as a Denial of Service vulnerability.

We have not determined the specific root cause of the issue, but we have found that it is related to the processing of .NET executables. We have minimized one of the crashing samples down to a 2-byte difference in relation to the original file: one which increases the value of the SizeOfImage field from 0xa000 to 0xa100, and one that changes the CLR Runtime Header data directory address from 0x2008 to 0xa008.

The issue reproduces on Windows 10 and Windows Server 2019 (32-bit and 64-bit, Special Pools not required). The crash occurs when any system component calls LoadLibraryEx(LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE) against the file, either directly or through another API such as GetFileVersionInfoSizeExW() or GetFileVersionInfoW(). In practice, this means that as soon as the file is displayed in Explorer, or the user hovers the cursor over it, or tries to open the file properties, or tries to rename it or perform any other similar action, the system will panic. In other words, just downloading such a file may permanently block the user's machine until they remove it through Recovery Mode etc. The attack scenario is similar to the one described in https://www.fortinet.com/blog/threat-research/microsoft-windows-remote-kernel-crash-vulnerability.html.

Attached is an archive with a minimized proof-of-concept PE image, the original file used to generate it, and three additional non-minimized samples. Please be careful when unpacking the ZIP as Windows may crash immediately once it sees the corrupted files on disk.


Proof of Concept:
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/47485.zip
Release DateTitleTypePlatformAuthor
2020-04-03"AIDA64 Engineer 6.20.5300 - 'Report File' filename Buffer Overflow (SEH)"localwindowsHodorsec
2020-04-03"Pandora FMS 7.0NG - 'net_tools.php' Remote Code Execution"webappsphp"Basim Alabdullah"
2020-04-02"DiskBoss 7.7.14 - 'Input Directory' Local Buffer Overflow (PoC)"localwindows"Paras Bhatia"
2020-04-01"DiskBoss 7.7.14 - Denial of Service (PoC)"doswindows"Paras Bhatia"
2020-04-01"10Strike LANState 9.32 - 'Force Check' Buffer Overflow (SEH)"localwindowsHodorsec
2020-03-31"Redis - Replication Code Execution (Metasploit)"remotelinuxMetasploit
2020-03-31"SharePoint Workflows - XOML Injection (Metasploit)"remotewindowsMetasploit
2020-03-31"Grandstream UCM6200 Series CTI Interface - 'user_password' SQL Injection"webappshardware"Jacob Baines"
2020-03-31"IBM TM1 / Planning Analytics - Unauthenticated Remote Code Execution (Metasploit)"remotemultipleMetasploit
2020-03-31"Grandstream UCM6200 Series WebSocket 1.0.20.20 - 'user_password' SQL Injection"webappshardware"Jacob Baines"
2020-03-31"FlashFXP 4.2.0 Build 1730 - Denial of Service (PoC)"doswindows"Paras Bhatia"
2020-03-31"DLINK DWL-2600 - Authenticated Remote Command Injection (Metasploit)"remotehardwareMetasploit
2020-03-30"Zen Load Balancer 3.10.1 - Remote Code Execution"webappscgi"Cody Sixteen"
2020-03-30"Microsoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Local Privilege Escalation"localwindows"Daniel García Gutiérrez"
2020-03-30"Multiple DrayTek Products - Pre-authentication Remote Root Code Execution"remotelinux0xsha
2020-03-30"10-Strike Network Inventory Explorer 9.03 - 'Read from File' Buffer Overflow (SEH)(ROP)"localwindowsHodorsec
2020-03-30"Joomla! com_fabrik 3.9.11 - Directory Traversal"webappsphpqw3rTyTy
2020-03-30"Odin Secure FTP Expert 7.6.3 - 'Site Info' Denial of Service (PoC)"doswindows"Ivan Marmolejo"
2020-03-27"Jinfornet Jreport 15.6 - Unauthenticated Directory Traversal"webappsjavahongphukt
2020-03-27"rConfig 3.9.4 - 'searchField' Unauthenticated Root Remote Code Execution"webappsphpvikingfr
2020-03-27"Easy RM to MP3 Converter 2.7.3.700 - 'Input' Local Buffer Overflow (SEH)"localwindows"Felipe Winsnes"
2020-03-27"ECK Hotel 1.0 - Cross-Site Request Forgery (Add Admin)"webappsphp"Mustafa Emre Gül"
2020-03-27"Everest 5.50.2100 - 'Open File' Denial of Service (PoC)"doswindows"Ivan Marmolejo"
2020-03-26"TP-Link Archer C50 3 - Denial of Service (PoC)"webappshardwarethewhiteh4t
2020-03-26"Centreo 19.10.8 - 'DisplayServiceStatus' Remote Code Execution"webappsphp"Engin Demirbilek"
2020-03-25"10-Strike Network Inventory Explorer 8.54 - 'Add' Local Buffer Overflow (SEH)"localwindows"Felipe Winsnes"
2020-03-25"Joomla! Component GMapFP 3.30 - Arbitrary File Upload"webappsphpThelastVvV
2020-03-25"10-Strike Network Inventory Explorer - 'srvInventoryWebServer' Unquoted Service Path"localwindows"Felipe Winsnes"
2020-03-25"LeptonCMS 4.5.0 - Persistent Cross-Site Scripting"webappsphpSunCSR
2020-03-25"AVAST SecureLine 5.5.522.0 - 'SecureLine' Unquoted Service Path"localwindows"Roberto Piña"
Release DateTitleTypePlatformAuthor
2020-04-03"AIDA64 Engineer 6.20.5300 - 'Report File' filename Buffer Overflow (SEH)"localwindowsHodorsec
2020-04-02"DiskBoss 7.7.14 - 'Input Directory' Local Buffer Overflow (PoC)"localwindows"Paras Bhatia"
2020-04-01"DiskBoss 7.7.14 - Denial of Service (PoC)"doswindows"Paras Bhatia"
2020-04-01"10Strike LANState 9.32 - 'Force Check' Buffer Overflow (SEH)"localwindowsHodorsec
2020-03-31"SharePoint Workflows - XOML Injection (Metasploit)"remotewindowsMetasploit
2020-03-31"FlashFXP 4.2.0 Build 1730 - Denial of Service (PoC)"doswindows"Paras Bhatia"
2020-03-30"Microsoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Local Privilege Escalation"localwindows"Daniel García Gutiérrez"
2020-03-30"10-Strike Network Inventory Explorer 9.03 - 'Read from File' Buffer Overflow (SEH)(ROP)"localwindowsHodorsec
2020-03-30"Odin Secure FTP Expert 7.6.3 - 'Site Info' Denial of Service (PoC)"doswindows"Ivan Marmolejo"
2020-03-27"Easy RM to MP3 Converter 2.7.3.700 - 'Input' Local Buffer Overflow (SEH)"localwindows"Felipe Winsnes"
2020-03-27"Everest 5.50.2100 - 'Open File' Denial of Service (PoC)"doswindows"Ivan Marmolejo"
2020-03-25"10-Strike Network Inventory Explorer 8.54 - 'Add' Local Buffer Overflow (SEH)"localwindows"Felipe Winsnes"
2020-03-25"10-Strike Network Inventory Explorer - 'srvInventoryWebServer' Unquoted Service Path"localwindows"Felipe Winsnes"
2020-03-25"AVAST SecureLine 5.5.522.0 - 'SecureLine' Unquoted Service Path"localwindows"Roberto Piña"
2020-03-24"Veyon 4.3.4 - 'VeyonService' Unquoted Service Path"localwindows"Víctor García"
2020-03-23"Google Chrome 80.0.3987.87 - Heap-Corruption Remote Denial of Service (PoC)"doswindows"Cem Onat Karagun"
2020-03-18"NetBackup 7.0 - 'NetBackup INET Daemon' Unquoted Service Path"localwindows"El Masas"
2020-03-14"Microsoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Buffer Overflow (PoC)"doswindowseerykitty
2020-03-13"AnyBurn 4.8 - Buffer Overflow (SEH)"localwindows"Richard Davy"
2020-03-12"ASUS AAHM 1.00.22 - 'asHmComSvc' Unquoted Service Path"localwindows"Roberto Piña"
2020-03-11"ASUS AXSP 1.02.00 - 'asComSvc' Unquoted Service Path"localwindows"Roberto Piña"
2020-03-09"Apache ActiveMQ 5.x-5.11.1 - Directory Traversal Shell Upload (Metasploit)"remotewindowsMetasploit
2020-03-06"ASUS GiftBox Desktop 1.1.1.127 - 'ASUSGiftBoxDesktop' Unquoted Service Path"localwindows"Oscar Flores"
2020-03-06"Deep Instinct Windows Agent 1.2.29.0 - 'DeepMgmtService' Unquoted Service Path"localwindows"Oscar Flores"
2020-03-06"Iskysoft Application Framework Service 2.4.3.241 - 'IsAppService' Unquoted Service Path"localwindows"Alejandro Reyes"
2020-03-06"SpyHunter 4 - 'SpyHunter 4 Service' Unquoted Service Path"localwindows"Alejandro Reyes"
2020-03-05"Exchange Control Panel - Viewstate Deserialization (Metasploit)"remotewindowsMetasploit
2020-03-03"Microsoft Windows - 'WizardOpium' Local Privilege Escalation"localwindowspiotrflorczyk
2020-03-02"CA Unified Infrastructure Management Nimsoft 7.80 - Remote Buffer Overflow"remotewindowswetw0rk
2020-03-02"Cyberoam Authentication Client 2.1.2.7 - Buffer Overflow (SEH)"localwindows"Andrey Stoykov"
Release DateTitleTypePlatformAuthor
2020-02-10"iOS/macOS - Out-of-Bounds Timestamp Write in IOAccelCommandQueue2::processSegmentKernelCommand()"dosmultiple"Google Security Research"
2020-02-10"usersctp - Out-of-Bounds Reads in sctp_load_addresses_from_init"doslinux"Google Security Research"
2020-01-28"macOS/iOS ImageIO - Heap Corruption when Processing Malformed TIFF Image"dosmultiple"Google Security Research"
2020-01-14"Android - ashmem Readonly Bypasses via remap_file_pages() and ASHMEM_UNPIN"dosandroid"Google Security Research"
2020-01-14"WeChat - Memory Corruption in CAudioJBM::InputAudioFrameToJBM"dosandroid"Google Security Research"
2019-12-18"macOS 10.14.6 (18G87) - Kernel Use-After-Free due to Race Condition in wait_for_namespace_event()"dosmacos"Google Security Research"
2019-12-16"Linux 5.3 - Privilege Escalation via io_uring Offload of sendmsg() onto Kernel Thread with Kernel Creds"locallinux"Google Security Research"
2019-12-11"Adobe Acrobat Reader DC - Heap-Based Memory Corruption due to Malformed TTF Font"doswindows"Google Security Research"
2019-11-22"Internet Explorer - Use-After-Free in JScript Arguments During toJSON Callback"doswindows"Google Security Research"
2019-11-22"macOS 10.14.6 - root->kernel Privilege Escalation via update_dyld_shared_cache"localmacos"Google Security Research"
2019-11-20"Ubuntu 19.10 - Refcount Underflow and Type Confusion in shiftfs"doslinux"Google Security Research"
2019-11-20"iOS 12.4 - Sandbox Escape due to Integer Overflow in mediaserverd"dosios"Google Security Research"
2019-11-20"Ubuntu 19.10 - ubuntu-aufs-modified mmap_region() Breaks Refcounting in overlayfs/shiftfs Error Path"doslinux"Google Security Research"
2019-11-11"iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled Address"dosmultiple"Google Security Research"
2019-11-11"Adobe Acrobat Reader DC for Windows - Use of Uninitialized Pointer due to Malformed JBIG2Globals Stream"doswindows"Google Security Research"
2019-11-11"Adobe Acrobat Reader DC for Windows - Use of Uninitialized Pointer due to Malformed OTF Font (CFF Table)"doswindows"Google Security Research"
2019-11-05"macOS XNU - Missing Locking in checkdirs_callback() Enables Race with fchdir_common()"dosmacos"Google Security Research"
2019-11-05"WebKit - Universal XSS in JSObject::putInlineSlow and JSValue::putToPrimitive"dosmultiple"Google Security Research"
2019-11-05"JavaScriptCore - Type Confusion During Bailout when Reconstructing Arguments Objects"dosmultiple"Google Security Research"
2019-10-30"JavaScriptCore - GetterSetter Type Confusion During DFG Compilation"dosmultiple"Google Security Research"
2019-10-28"WebKit - Universal XSS in HTMLFrameElementBase::isURLAllowed"dosmultiple"Google Security Research"
2019-10-21"Adobe Acrobat Reader DC for Windows - Heap-Based Buffer Overflow due to Malformed JP2 Stream (2)"doswindows"Google Security Research"
2019-10-10"Windows Kernel - Out-of-Bounds Read in CI!CipFixImageType While Parsing Malformed PE File"doswindows"Google Security Research"
2019-10-10"Windows Kernel - Out-of-Bounds Read in CI!HashKComputeFirstPageHash While Parsing Malformed PE File"doswindows"Google Security Research"
2019-10-10"Windows Kernel - win32k.sys TTF Font Processing Pool Corruption in win32k!ulClearTypeFilter"doswindows"Google Security Research"
2019-10-10"Windows Kernel - NULL Pointer Dereference in nt!MiOffsetToProtos While Parsing Malformed PE File"doswindows"Google Security Research"
2019-10-10"Windows Kernel - Out-of-Bounds Read in nt!MiParseImageLoadConfig While Parsing Malformed PE File"doswindows"Google Security Research"
2019-10-10"Windows Kernel - Out-of-Bounds Read in nt!MiRelocateImage While Parsing Malformed PE File"doswindows"Google Security Research"
2019-10-09"XNU - Remote Double-Free via Data Race in IPComp Input Path"dosmacos"Google Security Research"
2019-10-04"Android - Binder Driver Use-After-Free"localandroid"Google Security Research"
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/47485/?format=json')

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