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MNDT-2023-0003

Description

Multiple vulnerabilities exist in ASUS driver file Driver7.sys (1beb15c90dcf7a5234ed077833a0a3e900969b60be1d04fcebce0a9f8994bdbb) ioctl handler in Armoury Crate Throttle Gear Merge Module versions 5.3.4.0 and earlier.

Impact

High - Exploiting the vulnerability will give a local attacker SYSTEM level privileges.

Exploitability

Medium - The driver is only functional on an ASUS system (checks SMBIOS for ASUS strings).

CVE Reference

CVE-2022-42455

Common Vulnerability Scoring System

Base Score: 7.8 - Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Technical Details

IOCTL 0x9C40E414 exposes arbitrary MSR read and write capability.

Resolution

The issue was fixed in Armoury Crate Throttle Gear Merge Module version 5.3.4.1 as per ASUS.

Discovery Credits

  • Dan Kelly, Mandiant
  • Sam Kim, Mandiant
  • Dhanesh Kizhakkinan, Mandiant

Disclosure Timeline

  • 04-Oct-2022 - Issue reported to Asus
  • 11-Oct-2022 - Asus replied with updated software information

References