Important CVSS 7.5 2018-08 archive

Executive Summary

A remote code execution vulnerability exists when Internet Explorer improperly validates hyperlinks before loading executable libraries. An attacker who successfully exploited this vulnerability 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. 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. An attacker could host a specially crafted website designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email. The updates address the vulnerability by correcting how Internet Explorer validates hyperlinks before loading executable libraries.

Overview

7.5
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
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
High
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.7

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

12 affected products
Product KB Article Severity Impact Restart Required
Internet Explorer 10 on Windows Server 2012 4343901 (Monthly Rollup) 4343205 (IE Cumulative) Important Remote Code Execution 4338830 4339093 Base: 6.4 Temporal: 5.8 Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 10 for 32-bit Systems 4343892 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4343892 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4343887 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4343887 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4343885 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4343885 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 4343897 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 4343897 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 4343909 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 4343909 (Security Update) Important Remote Code Execution Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4343900 (Monthly Rollup) 4343899 (Security Only) Important Remote Code Execution 4338818 Base: 7.5 Temporal: 6.7 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup) 4343899 (Security Only) Important Remote Code Execution 4338818 Base: 7.5 Temporal: 6.7 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 8.1 for 32-bit systems 4343898 (Monthly Rollup) 4343205 (IE Cumulative) Important Remote Code Execution 4338815 4339093 Base: 7.5 Temporal: 6.7 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 8.1 for x64-based systems 4343898 (Monthly Rollup) 4343205 (IE Cumulative) Important Remote Code Execution 4338815 4339093 Base: 7.5 Temporal: 6.7 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows RT 8.1 4343898 (Monthly Rollup) Important Remote Code Execution Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4343900 (Monthly Rollup) 4343899 (Security Only) Important Remote Code Execution 4338818 Base: 6.4 Temporal: 5.8 Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows Server 2012 R2 4343898 (Monthly Rollup) 4343205 (IE Cumulative) Important Remote Code Execution 4338815 4339093 Base: 6.4 Temporal: 5.8 Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows Server 2016 4343887 (Security Update) Important Remote Code Execution Yes

Patches

6 patches
Article Type Restart
4343892 Security Update Yes
4343887 Security Update Yes
4343885 Security Update Yes
4343897 Security Update Yes
4343909 Security Update Yes
4343898 Monthly Rollup Yes

Known Exploits

Acknowledgments

Eduardo Braun Prado working with Trend Micro's Zero Day Initiative