CVE-2023-36434HighCVSS 9.8

Windows IIS Server Elevation of Privilege Vulnerability

Published
October 10, 2023
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2023-36434 →

📋 Description

How could an attacker exploit this vulnerability? In a network-based attack, an attacker could brute force user account passwords to log in as that user. Microsoft encourages the use of strong passwords that are more difficult for an attacker to brute force.

Why is the severity for this CVE rated as Important, but the CVSS score is 9.8? The Microsoft proprietary severity rating does not align with the CVSS scoring system. In this case, the severity rating of Important (rather than Critical) reflects the fact that brute-force attacks are unlikely to succeed against users with strong passwords. The CVSS scoring system doesn't allow for this type of nuance.

What privileges could be gained by an attacker who successfully exploited the vulnerability? The attacker would be able to login as another user successfully.

🎯 Affected products33

  • 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 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 version 21H2 for ARM64-based Systems
  • Windows 11 version 21H2 for x64-based Systems
  • 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
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • +3 more not shown

✅ Remediation

KB5031356 (Security Update) — fixed build 10.0.19045.3570 KB5031354 (Security Update) — fixed build 10.0.22621.2428 KB5031358 (Security Update) — fixed build 10.0.22000.2538 KB5031356 (Security Update) — fixed build 10.0.19041.3570 KB5031364 (Security Update) — fixed build 10.0.20348.2031 KB5031361 (Security Update) — fixed build 10.0.17763.4974 KB5031362 (Security Update) — fixed build 10.0.14393.6351 KB5031416 (Monthly Rollup) — fixed build 6.0.6003.22317 KB5031411 (Security Only) — fixed build 6.0.6003.22317 KB5031442 (Monthly Rollup) — fixed build 6.2.9200.24523 KB5031427 (Security Only) — fixed build 6.2.9200.24523 KB5031408 (Monthly Rollup) — fixed build 6.1.7601.26769 KB5031441 (Security Only) — fixed build 6.1.7601.26769 KB5031419 (Monthly Rollup) — fixed build 6.3.9600.21620 KB5031407 (Security Only) — fixed build 6.3.9600.21620 KB5031377 (Security Update) — fixed build 10.0.10240.20232

🔗 References (36)