Critical CVSS 4.3 2018-01 archive

Executive Summary

A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that enables an attacker to execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge, and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by way of enticement in an email or Instant Messenger message, or by getting them to open an attachment sent through email. The security update addresses the vulnerability by modifying how Microsoft Edge handles objects in memory.

Overview

4.3
CVSS MEDIUM
Critical
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
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
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
None
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

10 affected products
Product KB Article Severity Impact Restart Required
ChakraCore Commit (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems 4056888 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems 4056888 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 4056890 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 4056890 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems 4056891 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems 4056891 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 4056892 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 4056892 (Security Update) Critical Information Disclosure Yes
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 4056890 (Security Update) Moderate Information Disclosure Yes

Patches

5 patches
Article Type Restart
Commit Security Update Yes
4056888 Security Update Yes
4056890 Security Update Yes
4056891 Security Update Yes
4056892 Security Update Yes

Known Exploits

Acknowledgments

Lokihardt of Google Project Zero