CVE-2022-34301: CERT/CC: CVE-2022-34301 Eurosoft Boot Loader Bypass

Overview

Severity
N/A
Category
Security Feature Bypass
Exploit Status
Not Exploited
Exploitation Likelihood
More Likely
Patch Tuesday
2022-Aug
Released
2022-08-09
EPSS Score
0.13% (percentile: 31.8%)

FAQ

What kind of security feature could be bypassed by successfully exploiting this vulnerability? An attacker who successfully exploited this vulnerability could bypass Secure Boot. Why are there different security update packages for this CVE? These are standalone security updates. These packages must be installed in addition to the normal security updates to be protected from this vulnerability. Are there any prerequisites to these security updates? These security updates have a Servicing Stack Update prerequisite for specific KB numbers. The packages have a built in pre-requisite logic to ensure the ordering. Customer should ensure that they have the latest Servicing Stack Update installed before installing these standalone security updates. See ADV990001 | Latest Servicing Stack Updates for more information. If I need to manually install these standalone updates, a Servicing Stack Update, and an August 2022 Security Update, in what order should they be installed? Customers who need to manually install these three updates should install them in the following order: Servicing Stack Update Standalone Secure Boot Update listed in this CVE August 2022 Security Update Customers whose systems are configured to receive automatic updates will automatically receive these updates in the correct order. Is there anything else that I should know about these updates? If Windows Defender Credential Guard (Virtual Secure Mode) is enabled, two additional reboots will be required. Why is the CERT/CC the assigning CNA (CVE Numbering Authority)? This CVE is regarding a vulnerability in a third party driver. CERT/CC created this CVE on behalf of the researcher who discovered the vulnerability.

Affected Products (31)

Windows

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows 10 Version 21H1 for x64-based Systems
  • Windows 10 Version 21H1 for ARM64-based Systems
  • Windows 10 Version 21H1 for 32-bit Systems
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows 10 Version 20H2 for 32-bit Systems
  • Windows 10 Version 20H2 for ARM64-based Systems
  • Windows Server, version 20H2 (Server Core Installation)
  • Windows 11 version 21H2 for x64-based Systems
  • Windows 11 version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1

ESU

  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)

Security Updates (4)

Revision History

  • 2022-08-09: Information published.