CVE-2018-0883 — Windows Shell Remote Code Execution Vulnerability

Executive Summary

A remote code execution vulnerability exists when Windows Shell does not properly validate file copy destinations. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. To exploit the vulnerability, a user must open a specially crafted file. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and then convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force a user to visit the website. Instead, an attacker would have to convince a user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file. The security update addresses the vulnerability by helping to ensure that Windows Shell validates file copy destinations.

Overview

5

CVSS MEDIUM

Important

MS Severity

Not Exploited

MS Exploit Status

More Likely

MS Exploit Likelihood

Category Remote Code Execution

Released Mar 13 2018

Last Updated Mar 13 2018

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

CVSS Vector

ATTACK VECTOR

Network

ATTACK COMPLEXITY

High

PRIVILEGES REQUIRED

None

USER INTERACTION

Required

SCOPE

Unchanged

CONFIDENTIALITY

Low

INTEGRITY

Low

AVAILABILITY

Low

EXPLOIT CODE MATURITY

Proof-of-Concept

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 4.5

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	`4088786 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 for x64-based Systems	`4088786 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1511 for 32-bit Systems	`4088779 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1511 for x64-based Systems	`4088779 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1607 for 32-bit Systems	`4088787 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1607 for x64-based Systems	`4088787 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1703 for 32-bit Systems	`4088782 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1703 for x64-based Systems	`4088782 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1709 for 32-bit Systems	`4088776 (Security Update)`	Important	Remote Code Execution	Yes
Windows 7 for 32-bit Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Remote Code Execution 4074598 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows 7 for x64-based Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Remote Code Execution 4074598 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows 8.1 for 32-bit systems 4088876 (Monthly Rollup) 4088879 (Security Only) Important Remote Code Execution 4074594 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows 8.1 for x64-based systems 4088876 (Monthly Rollup) 4088879 (Security Only) Important Remote Code Execution 4074594 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows RT 8.1	`4088876 (Monthly Rollup)`	Important	Remote Code Execution	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2	`4089175 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)	`4089175 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2008 for Itanium-Based Systems Service Pack 2	`4089175 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2008 for x64-based Systems Service Pack 2	`4089175 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)	`4089175 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Remote Code Execution 4074598 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4088875 (Monthly Rollup) 4088878 (Security Only) Important Remote Code Execution 4074598 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4088875 (Monthly Rollup) 4088878 (Security Only) Important Remote Code Execution 4074598 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2012 4088877 (Monthly Rollup) 4088880 (Security Only) Important Remote Code Execution 4074593 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2012 (Server Core installation) 4088877 (Monthly Rollup) 4088880 (Security Only) Important Remote Code Execution 4074593 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4088876 (Monthly Rollup) 4088879 (Security Only) Important Remote Code Execution 4074594 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 (Server Core installation) 4088876 (Monthly Rollup) 4088879 (Security Only) Important Remote Code Execution 4074594 Base: 5.0 Temporal: 4.5 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Yes None Windows Server 2016	`4088787 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2016 (Server Core installation)	`4088787 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server, version 1709 (Server Core Installation)	`4088776 (Security Update)`	Important	Remote Code Execution	Yes

Patches

7 patches

Article	Type	Restart
`4088786`	Security Update	Yes
`4088779`	Security Update	Yes
`4088787`	Security Update	Yes
`4088782`	Security Update	Yes
`4088776`	Security Update	Yes
`4088876`	Monthly Rollup	Yes
`4089175`	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

None

References

MSRC Advisory MITRE NVD