CVE-2019-1389 — A remote code execution vulnerability exists when Windows Hyper-V on a host serv

A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Windows Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-139

01What is this vulnerability?

A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Windows Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1397, CVE-2019-1398.

02Affected products

Vendor	Product	Versions
Microsoft	Windows	7 for x64-based Systems Service Pack 1, 8.1 for x64-based systems, 10 for x64-based Systems, 10 Version 1607 for x64-based Systems, 10 Version 1709 for x64-based Systems, 10 Version 1803 for x64-based Systems
Microsoft	Windows Server	2008 R2 for x64-based Systems Service Pack 1 (Core installation), 2008 R2 for x64-based Systems Service Pack 1, 2012, 2012 (Core installation), 2012 R2, 2012 R2 (Core installation), 2016, 2016 (Core installation), version 1803 (Core Installation), 2008 for x64-based Systems Service Pack 2, 2008 for x64-based Systems Service Pack 2 (Core installation)

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2019-11-12T18:52:54.000Z
• Last modified: 2024-08-04T18:13:30.573Z

09References

• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1389