Actively exploited · Published Jul 14, 2020 · Assigned by microsoft
CVE-2020-1350
Critical 10.0 Exploited
In plain English
A critical-severity improper input validation in Windows Server from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 96.7% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by May 3, 2022.
Official description
A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows DNS Server Remote Code Execution Vulnerability'.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server | 20192019 (Core installation)20162016 (Core installation)2008 for 32-bit Systems Service Pack 22008 for 32-bit Systems Service Pack 2 (Core installation)2008 for x64-based Systems Service Pack 22008 for x64-based Systems Service Pack 2 (Core installation) |
| Microsoft | Windows Server, version 1909 (Server Core installation) | unspecified |
| Microsoft | Windows Server, version 1903 (Server Core installation) | unspecified |
| Microsoft | Windows Server, version 2004 (Server Core installation) | unspecified |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1350 x_refsource_MISC
- http://packetstormsecurity.com/files/158484/SIGRed-Windows-DNS-Denial-Of-Service.html x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1350 government-resource