CVE-2022-26925HighCVSS 8.1

Windows LSA Spoofing Vulnerability

Published
May 10, 2022
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2022-26925 →

📋 Description

How could an attacker exploit this vulnerability? An unauthenticated attacker could call a method on the LSARPC interface and coerce the domain controller to authenticate to the attacker using NTLM. This security update detects anonymous connection attempts in LSARPC and disallows it. Is there more information available on how to protect my system? Yes. Please see ADV210003 Mitigating NTLM Relay Attacks on Active Directory Certificate Services (AD CS). Are there further actions I need to take to protect my system after I have applied the security update? Yes. Please see KB5005413 for more information on the steps that you need to take to protect your system. Please note that the combined CVSS score would be 9.8 when this vulnerability is chained with the noted NTLM Relay Attacks on Active Directory Certificate Services (AD CS). Should I prioritize updating domain controllers when I apply the security updates released on May 10, 2022? Yes. This vulnerability affects all servers but domain controllers should be prioritized in terms of applying security updates. How will installing the updates that address this CVE impact my environment? The EFS API OpenEncryptedFileRaw(A/W), often used in backup software, continues to work in all versions of Windows (local and remote), except when backing up to or from a system running Windows Server 2008 SP2. OpenEncryptedFileRaw will no longer work on Windows Server 2008 SP2. Note: If you are unable to use backup software on Windows 7 Service Pack 1 and Windows Server 2008 R2 Service Pack 1 and later, after installing the updates that address this CVE, contact the manufacturer of your backup software for updates and support.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? The attacker must inject themselves into the logical network path between the target and the resource requested by the victim to read or modify network communications. This is called a machine-in-the-middle (MITM) attack.

🎯 Affected products42

  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1909 for 32-bit Systems
  • Windows 10 Version 1909 for ARM64-based Systems
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 20H2 for 32-bit Systems
  • Windows 10 Version 20H2 for ARM64-based Systems
  • Windows 10 Version 21H1 for 32-bit Systems
  • Windows 10 Version 21H1 for ARM64-based Systems
  • Windows 10 Version 21H1 for x64-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 11 version 21H2 for ARM64-based Systems
  • Windows 11 version 21H2 for x64-based Systems
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • +12 more not shown

✅ Remediation

KB5013941 (Security Update) — fixed build 10.0.17763.2928 KB5013945 (Security Update) — fixed build 10.0.18363.2274 KB5013942 (Security Update) — fixed build 10.0.19043.1706 KB5013944 (Security Update) — fixed build 10.0.20348.707 KB5013942 (Security Update) — fixed build 10.0.19042.1706 KB5013943 (Security Update) — fixed build 10.0.22000.675 KB5013942 (Security Update) — fixed build 10.0.19044.1706 KB5013963 (Security Update) — fixed build 10.0.10240.19297 KB5013952 (Security Update) — fixed build 10.0.14393.5125 KB5014012 (Monthly Rollup) — fixed build 6.1.7601.25954 KB5013999 (Security Only) — fixed build 6.1.7601.25954 KB5014011 (Monthly Rollup) — fixed build 6.3.9600.20371 KB5014001 (Security Only) — fixed build 6.3.9600.20365 KB5014025 (ServicingStackUpdate) — fixed build 6.3.9600.20367 KB5014010 (Monthly Rollup) — fixed build 6.0.6003.21481 KB5014006 (Security Only) — fixed build 6.0.6003.21481 KB5014017 (Monthly Rollup) — fixed build 6.2.9200.23714 KB5014018 (Security Only) — fixed build 6.2.9200.23714

🔗 References (33)