Vulnerability in Microsoft .Net Framework 2.0
CVE-2019-0820
A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.
EPSS: 0.081 (92.3th percentile) — read the EPSS interpretation.
Affected products
- Microsoft .Net Framework 2.0 — versions Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft .Net Framework 3.0 — versions Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft .Net Framework 3.5 — versions Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems
- Microsoft .Net Framework 3.5.1 — versions Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- Microsoft .Net Framework 3.5 On Windows 10 Version 1903 For 32-bit Systems — versions unspecified
- Microsoft .Net Framework 3.5 On Windows 10 Version 1903 For X64-based Systems — versions unspecified
- Microsoft .Net Framework 3.5 On Windows Server, Version 1903 (Server Core Installation) — versions unspecified
- Microsoft .Net Framework 4.5.2 — versions Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- Microsoft .Net Framework 4.6 — versions Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft .Net Framework 4.6.2/4.7/4.7.1/4.7.2 — versions Windows Server 2016, Windows Server 2016 (Server Core installation)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820 (x_refsource_MISC)
- RHSA-2019:1259 (vendor-advisory, x_refsource_REDHAT)
Frequently asked questions
- What is CVE-2019-0820?
- CVE-2019-0820 is a vulnerability in Microsoft .Net Framework 2.0. Published 2019-05-16.
- Is CVE-2019-0820 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.