Low CVSS 5.4 2018-08 archive

Executive Summary

A spoofing vulnerability exists when Microsoft Edge improperly handles specific HTML content. An attacker who successfully exploited this vulnerability could trick a user into believing that the user was on a legitimate website. The specially crafted website could either spoof content or serve as a pivot to chain an attack with other vulnerabilities in web services. To exploit the vulnerability, the user must either browse to a malicious website or be redirected to it. In an email attack scenario, an attacker could send an email message in an attempt to convince the user to click a link to a malicious site. In a web-based attack scenario, an attacker could host a specially crafted website designed to appear as a legitimate website to the user. However, the attacker would have no way to force the user to visit the specially crafted website. The attacker would have to convince the user to visit the specially crafted website, typically by way of enticement in an email or instant message. The security update addresses the vulnerability by correcting how Microsoft Edge handles specific HTML content.

Overview

5.4
CVSS MEDIUM
Low
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Spoofing
Released Aug 14 2018
Last Updated Aug 14 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.9

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

9 affected products
Product KB Article Severity Impact Restart Required
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Low Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 4343887 (Security Update) Low Spoofing Yes

Patches

4 patches
Article Type Restart
4343887 Security Update Yes
4343885 Security Update Yes
4343897 Security Update Yes
4343909 Security Update Yes

Known Exploits

Acknowledgments

Gareth Heyes of PortSwigger