CVE-2018-0957 — An information disclosure vulnerability exists when Windows Hyper-V on a host op

An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system, aka "Hyper-V Information Disclosure Vulnerability." This affects Windows Server 2012 R

01What is this vulnerability?

An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system, aka "Hyper-V Information Disclosure Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-0964.

02Affected products

Vendor	Product	Versions
Microsoft	Windows Server 2012 R2	(Server Core installation)
Microsoft	Windows RT 8.1	Windows RT 8.1
Microsoft	Windows Server 2016	(Server Core installation)
Microsoft	Windows 8.1	x64-based systems
Microsoft	Windows 10	Version 1511 for x64-based Systems, Version 1607 for x64-based Systems, Version 1703 for x64-based Systems, Version 1709 for x64-based Systems, x64-based Systems
Microsoft	Windows 10 Servers	version 1709 (Server 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: 2018-04-12T01:00:00.000Z
• Last modified: 2024-08-05T03:44:11.627Z

09References

• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0957
• www.securitytracker.com — http://www.securitytracker.com/id/1040662
• www.securityfocus.com — http://www.securityfocus.com/bid/103628