CVE-2018-0747 — Windows Kernel Information Disclosure Vulnerability

Executive Summary

An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows kernel handles memory addresses.

Overview

4.7

CVSS MEDIUM

Important

MS Severity

Not Exploited

MS Exploit Status

More Likely

MS Exploit Likelihood

Category Information Disclosure

Released Jan 9 2018

Last Updated Jan 9 2018

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

CVSS Vector

ATTACK VECTOR

Local

ATTACK COMPLEXITY

High

PRIVILEGES REQUIRED

Low

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

High

INTEGRITY

None

AVAILABILITY

None

EXPLOIT CODE MATURITY

Proof-of-Concept

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 4.2

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

18 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`4056893 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 for x64-based Systems	`4056893 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1511 for 32-bit Systems	`4056888 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1511 for x64-based Systems	`4056888 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1607 for 32-bit Systems	`4056890 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1607 for x64-based Systems	`4056890 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1703 for 32-bit Systems	`4056891 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1703 for x64-based Systems	`4056891 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1709 for 32-bit Systems	`4056892 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1709 for x64-based Systems	`4056892 (Security Update)`	Important	Information Disclosure	Yes
Windows 7 for 32-bit Systems Service Pack 1 4056894 (Monthly Rollup) 4056897 (Security Only) Important Information Disclosure 4054518 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows 7 for x64-based Systems Service Pack 1 4056894 (Monthly Rollup) 4056897 (Security Only) Important Information Disclosure 4054518 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows 8.1 for 32-bit systems 4056895 (Monthly Rollup) 4056898 (Security Only) Important Information Disclosure 4054519 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows 8.1 for x64-based systems 4056895 (Monthly Rollup) 4056898 (Security Only) Important Information Disclosure 4054519 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 for 32-bit Systems Service Pack 2	`4056613 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	`4056613 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2	`4056613 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2008 for x64-based Systems Service Pack 2	`4056613 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	`4056613 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4056894 (Monthly Rollup) 4056897 (Security Only) Important Information Disclosure 4054518 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4056894 (Monthly Rollup) 4056897 (Security Only) Important Information Disclosure 4054518 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4056894 (Monthly Rollup) 4056897 (Security Only) Important Information Disclosure 4054518 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 4056896 (Monthly Rollup) 4056899 (Security Only) Important Information Disclosure 4054520 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 (Server Core installation) 4056896 (Monthly Rollup) 4056899 (Security Only) Important Information Disclosure 4054520 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4056895 (Monthly Rollup) 4056898 (Security Only) Important Information Disclosure 4054519 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 (Server Core installation) 4056895 (Monthly Rollup) 4056898 (Security Only) Important Information Disclosure 4054519 Base: 4.7 Temporal: 4.2 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C Yes None Windows Server 2016	`4056890 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2016 (Server Core installation)	`4056890 (Security Update)`	Important	Information Disclosure	Yes
Windows Server, version 1709 (Server Core Installation)	`4056892 (Security Update)`	Important	Information Disclosure	Yes

Patches

6 patches

Article	Type	Restart
`4056893`	Security Update	Yes
`4056888`	Security Update	Yes
`4056890`	Security Update	Yes
`4056891`	Security Update	Yes
`4056892`	Security Update	Yes
`4056613`	Security Update	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Mateusz Jurczyk of Google Project Zero

References

MSRC Advisory MITRE NVD