CVE-2021-43215CriticalCVSS 9.8

iSNS Server Memory Corruption Vulnerability Can Lead to Remote Code Execution

Published
December 14, 2021
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2021-43215 →

📋 Description

How could an attacker exploit this vulnerability? An attacker could send a specially crafted request to the Internet Storage Name Service (iSNS) server, which could result in remote code execution.

What is Windows iSNS? The Internet Storage Name Service (iSNS) protocol is used for interaction between iSNS servers and iSNS clients. iSNS manages an Internet Storage Name Service (iSNS) server, providing a registration function to allow all entities in a storage network to register and query the iSNS database. Is Windows iSNS installed by default? No. See iSNS Server Overview for more information about iSNS.

🎯 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 2004 for 32-bit Systems
  • Windows 10 Version 2004 for ARM64-based Systems
  • Windows 10 Version 2004 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 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)
  • +12 more not shown

✅ Remediation

KB5008218 (Security Update) — fixed build 10.0.17763.2366 KB5008206 (Security Update) — fixed build 10.0.18363.1977 KB5008212 (Security Update) — fixed build 10.0.19043.1415 KB5008212 (Security Update) — fixed build 10.0.19041.1415 KB5008212 (Security Update) — fixed build 10.0.19042.1415 KB5008212 (Security Update) — fixed build 10.0.19044.1415 KB5008230 (Security Update) — fixed build 10.0.10240.19145 KB5008207 (Security Update) — fixed build 10.0.14393.4825 KB5008244 (Monthly Rollup) — fixed build 6.1.7601.25796 KB5008282 (Security Only) — fixed build 6.1.7601.25796 KB5008263 (Monthly Rollup) — fixed build 6.3.9600.20207 KB5008285 (Security Only) — fixed build 6.3.9600.20207 KB5008274 (Monthly Rollup) — fixed build 6.0.6003.21309 KB5008271 (Security Only) — fixed build 6.0.6003.21309 KB5008277 (Monthly Rollup) — fixed build 6.2.9200.23545 KB5008255 (Security Only) — fixed build 6.2.9200.23540

🔗 References (25)