Important CVSS 4.3 2018-08 archive

Executive Summary

A spoofing vulnerability exists when Microsoft Edge does not properly parse HTTP content. An attacker who successfully exploited this vulnerability could trick a user by redirecting the user to a specially crafted 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 click a specially crafted URL. In an email attack scenario, an attacker could send an email message containing the specially crafted URL to the user in an attempt to convince the user to click it. 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, and then convince the user to interact with content on the website. The update addresses the vulnerability by correcting how Microsoft Edge parses HTTP responses.

Overview

4.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
More 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
None
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 3.9

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

2 affected products
Product KB Article Severity Impact Restart Required
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Spoofing Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Spoofing Yes

Patches

1 patch
Article Type Restart
4343909 Security Update Yes

Known Exploits

Acknowledgments

James Lee @Windowsrcer
Anas Mahmood
Zhong Zhaochen
Rafay Baloch