Vulnerability

CERT-In Vulnerability Note CIVN-2018-0207
Multiple Vulnerabilities in Microsoft Internet Explorer

Original Issue Date:December 12, 2018

Severity Rating: HIGH

Software Affected

Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1703 for 32-bit Systems
Windows 10 Version 1703 for x64-based Systems
Windows 10 Version 1803 for 32-bit Systems
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1809 for 32 bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1709 for 32-bit Systems
Windows 10 Version 1709 for 64-based Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows RT 8.1
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2012
Windows Server 2012 R2
Windows Server 2016
Windows Server 2019

Overview

Multiple vulnerabilities have been reported in Microsoft Internet Explorer that could allow a remote attacker to bypass security restrictions and execute arbitrary code on the targeted system.

Description

1. Remote Code Execution Vulnerability ( CVE-2018-8619 )

A remote code execution vulnerability exists in Microsoft Internet Explorer when the Internet Explorer VBScript execution policy does not properly restrict VBScript under specific conditions. A remote attacker could exploit this vulnerability by enticing the user to view a specially crafted website or convincing the user to open a malicious attachment sent via an email or instant message.
Successful exploitation of this vulnerability could allow the attacker to run arbitrary code with medium-integrity level privileges on the targeted system.

2. Memory Corruption Vulnerability ( CVE-2018-8631 CVE-2018-8643 CVE-2018-8625 CVE-2018-8570 )

Multiple remote code execution vulnerabilities exist in Microsoft Internet Explorer due to improper handling of objects in memory by the affected software. A remote attacker could exploit these vulnerabilities by enticing the user to view a specially crafted website or convincing the user to open a malicious attachment sent via an email or instant message.
Successful exploitation of these vulnerabilities could allow the attacker to execute arbitrary code and could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system.

Solution

Apply appropriate patches as mentioned in Microsoft Security Bulletin
https://portal.msrc.microsoft.com/en-us/security-guidance

Vendor Information

Microsoft
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8619
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8625
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8631
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8643
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8570

References

Security Tracker
https://securitytracker.com/id/1042131

CVE Name
CVE-2018-8619
CVE-2018-8631
CVE-2018-8643
CVE-2018-8625
CVE-2018-8570

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-24368572

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India