CVE-2019-0820High

.NET Framework and .NET Core Denial of Service Vulnerability

Published
May 14, 2019
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2019-0820 →

📋 Description

A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET application. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to a .NET Framework (or .NET core) application. The update addresses the vulnerability by correcting how .NET Framework and .NET Core applications handle RegEx string processing.

🎯 Affected products108

  • .NET Core 1.0
  • .NET Core 1.1
  • .NET Core 2.1
  • .NET Core 2.2
  • Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
  • Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2
  • Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
  • Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
  • Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2
  • Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 Version 1903 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems
  • Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems
  • Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems
  • Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems
  • Microsoft .NET Framework 3.5 on Windows Server 2012
  • Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)
  • +78 more not shown

✅ Remediation

KBRelease Notes (Security Update) KB4495620 (Security Update) KB4499167 (Security Update) KB4499405 (Security Update) KB4499406 (Monthly Rollup) KB4498961 (Security Only) KB4499408 (Monthly Rollup) KB4498963 (Security Only) KB4499407 (Monthly Rollup) KB4498962 (Security Only) KB4494440 (Security Update) KB4499409 (Monthly Rollup) KB4498964 (Security Only) KB4499181 (Security Update) KB4499179 (Security Update) KB4499154 (Security Update) KB4495613 (Security Update) KB4495616 (Security Update) KB4495611 (Security Update) KB4495610 (Security Update)

🔗 References (49)