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    Rewterz Threat Advisory – CVE-2018-8460 & CVE-2018-8491 – Microsoft Internet Explorer 11 Multiple Memory Corruption Vulnerabilities

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    • Remote SOC
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    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Chaos Ransomware – Active IOCs
    Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Advisory – Multiple Adobe ColdFusion Vulnerabilities
    Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Ursnif Banking Trojan aka Gozi – Active IOCs
    Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]

    Threat Insights

    16
    pdf-file (1)
    Annual Threat Intelligence Report 2022
    • Threat Advisories
    • Monthly Threat Insights
    • Threat Intelligence Reports
  • Why Rewterz?

    About Us

    Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.

    Read More

    play_btn_Smallplay_btn_hover_Small
    leadership

    Our Leadership

    Our leadership team brings together years of knowledge and experience in cybersecurity to drive our company's mission and vision. Our team is passionate about delivering high-quality products and services, leading by example and assisting our clients in securing their organization’s environment.
    help

    CSR

    At Rewterz, we believe that businesses have a responsibility to impact positively and contribute to the well-being of our communities as well as the planet. That's why we are committed to operating in a socially responsible and sustainable way.

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October 12, 2018

Rewterz Threat Advisory – CVE-2018-8460 & CVE-2018-8491 – Microsoft Internet Explorer 11 Multiple Memory Corruption Vulnerabilities

October 12, 2018

Microsoft Internet Explorer 11 was found vulnerable to multiple threats that may cause memory corruption.

 

 

IMPACT:  CRITICAL

 

 

PUBLISH DATE: 12-10-2018

 

 

OVERVIEW

 

 

Two errors were found in the Microsoft Internet Explorer 11. The errors occur when handling objects in memory and can be exploited to corrupt memory and subsequently execute arbitrary code.

 

 

ANALYSIS

 

 

When Internet Explorer improperly accesses objects in memory, it gives rise to some errors leading to remote code execution vulnerabilities. The vulnerabilities corrupt the memory in such a way that attackers may execute arbitrary codes on the system using user privileges of the current logged-in user.

 

 

The vulnerabilities get more harmful if the current user happens to be logged on with administrative user rights. It’ll let an attacker take control of a system and enable them to modify or delete data, install malicious programs or create more accounts with administrative rights.

 

 

In case of an exploit, the attacker could host a specially crafted website designed to exploit the vulnerability through Internet Explorer. They will then proliferate the link of that website most likely through phishing emails to convince users to visit it.

 

 

Compromised websites can also be used for the attack. To exploit the vulnerability, attackers can also submit specially crafted files on websites that accept ads or user-generated content.

 

 

Apart from the memory corruption damage, a failed attack will cause denial of service conditions. The security update involves a modification of Internet Explorer in how it handles objects in memory.

 

 

AFFECTED PRODUCTS

 

 

Microsoft Internet Explorer 11.x

 

 

UPDATES

 

 

Apply following updates.

 

 

  • Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems (KB4462918):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462918

 

  • Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems (KB4462919):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462919

 

  • Internet Explorer 11 on Windows 10 for 32-bit Systems (KB4462922):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462922

 

  • Internet Explorer 11 on Windows Server 2016 (KB4462917):
  • Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems (KB4462917):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462917

 

  • Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems (KB4462937):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462937

 

  • Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems (KB4464330):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4464330

 

  • Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems (KB4464330):
  • Internet Explorer 11 on Windows Server 2019 (KB4464330):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4464330

 

  • Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems (KB4464330):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4464330

 

  • Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems (KB4462917):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462917

 

  • Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems (KB4462918):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462918

 

  • Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems (KB4462919):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462919

 

  • Internet Explorer 11 on Windows 10 for x64-based Systems (KB4462922):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462922

 

  • Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 (KB4462923):
  • Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (KB4462923):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462923

 

  • Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 (KB4462923):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462923

 

  • Internet Explorer 11 on Windows RT 8.1 (KB4462926):

Apply update (please see the vendor’s service database for details).

  • Internet Explorer 11 on Windows 8.1 for x64-based systems (KB4462926):
  • Internet Explorer 11 on Windows Server 2012 R2 (KB4462926):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462926

 

  • Internet Explorer 11 on Windows 8.1 for 32-bit systems (KB4462926):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462926

 

  • Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems (KB4462937):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462937

 

  • Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 (KB4462949):
  • Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (KB4462949):
  • Internet Explorer 11 on Windows 8.1 for x64-based systems (KB4462949):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462949

 

  • Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 (KB4462949):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462949

 

  • Internet Explorer 11 on Windows Server 2012 R2 (KB4462949):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462949

 

  • Internet Explorer 11 on Windows 8.1 for 32-bit systems (KB4462949):

 

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4462949

 

 

If you think you’re a victim of a cyber-attack, immediately send an email to info@rewterz.com.

Platform

  • Rewterz XDR
  • Rewterz Defense
  • Rewterz Threat Intelligence

Managed Security Services

  • Managed Security Monitoring
  • Remote SOC
  • Onsite SOC
  • Hybrid SOC

Assess

  • Compromise Assessment
  • APT Assessment
  • Penetration Testing
  • Architecture Design & Review
  • Red Team Assessment
  • Purple Team Assessment
  • Social Engineering
  • Source Code Review

Transform

  • SOC Consultancy
  • SOC Maturity Assessment
  • SOC Model Evaluation
  • SOC Gap Analysis
  • SIEM Gap Analysis
  • SIEM Optimization
  • SOC Content Pack

Train

  • Simulated Cyber Attack Exercise
  • Tabletop Exercise
  • Security Awareness and Training

Respond

  • Incident Analysis
  • Incident Response

Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
  • Press Releases

Connect With Us

  • Contact
  • Careers
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