Important CVSS 4.8 ⚠️ Exploited in the wild 📢 Publicly disclosed 2018-08 archive

Executive Summary

A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths. An attacker who successfully exploited this vulnerability could run arbitrary code in the context of the current user. If the current user is logged on as an administrator, 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 elevated privileges. Users whose accounts are configured to have fewer privileges on the system could be less impacted than users who operate with administrative privileges. To exploit the vulnerability, an attacker must entice a user to 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 and open the specially crafted file. This security update addresses the vulnerability by ensuring the Windows Shell properly validates file paths.

Overview

4.8
CVSS MEDIUM
Important
MS Severity
Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Aug 14 2018
Last Updated Aug 14 2018
Publicly Disclosed Yes
CISA KEV Not Listed
Known Exploits None Known

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
Low
AVAILABILITY
Low
Temporal Score: 4.8

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

8 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Remote Code Execution Yes
Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Remote Code Execution Yes
Windows Server, version 1709 (Server Core Installation) 4343897 (Security Update) Important Remote Code Execution Yes
Windows Server, version 1803 (Server Core Installation) 4343909 (Security Update) Important Remote Code Execution Yes

Patches

3 patches
Article Type Restart
4343885 Security Update Yes
4343897 Security Update Yes
4343909 Security Update Yes

Known Exploits

Acknowledgments

Matt Nelson ( @enigma0x3