Command Injection and Buffer Overflow in Multiple Sharp NEC Displays

Command Injection and Buffer Overflow in Multiple Sharp NEC Displays
Cyber Labs

17 of 20

This insight is part 17 of 20 in this Collection.

July 6, 2022 3 mins

Command Injection and Buffer Overflow in Multiple Sharp NEC Displays

CVE-2021-20698, CVE-2021-20699: Command Injection and Buffer Overflow vulnerabilities in Sharp NEC Display Solutions UN/UX Series displays.

Aon’s Cyber Solutions discovered multiple command injection and buffer overflow vulnerabilities affecting several Sharp NEC Display Solutions UN/UX series displays leading to unauthenticated remote code execution as the root user. For a complete listing of affected systems and remediation instructions, refer to the Vendor Advisory section below. The vulnerabilities were discovered by Aon’s Cyber Solutions team member Howard McGreehan.

Aon would like to thank Sharp NEC Display Solutions for working with us as part of our coordinated disclosure process.

Timeline:
  • 03/15/21 – Initial disclosure to Sharp NEC Display Solutions
  • 05/18/21 – Issues confirmed by Sharp NEC Display Solutions, firmware upgrade release dates set
  • 05/27/21 – CVEs assigned by Sharp NEC Display Solutions
  • 06/09/21 – Firmware updates released, Sharp NEC Display Solutions discloses vulnerabilities
  • 07/06/22 – Aon advisory released
Vulnerability Listing / Credits:
  • CVE-2021-20698 - Command Injection
  • CVE-2021-20699 - Buffer Overflow
Vendor Advisory:

https://www.sharp-nec-displays.com/global/support/info/A5-1_vulnerability.html

Command Injection and Buffer Overflow in Multiple Sharp NEC Display Solutions UN/UX Series Displays

Overview

Multiple command injection and buffer overflow vulnerabilities were discovered in the “cgictrl” binary within the administrative web consoles of Sharp NEC Display Solutions UN/UX series displays. These vulnerabilities can be triggered by sending specially crafted HTTP requests to the vulnerable binary. Exploiting these vulnerabilities may allow unauthenticated remote attackers to execute arbitrary code on the system as the root user, completely compromising the device.

Remediation

Refer to the Vendor Advisory for a complete list of firmware versions in which this vulnerability has been fixed and further instructions on how to upgrade the affected systems.

Aon’s Thought Leader
  • Howard McGreehan
    Manager, Security Testing, Cyber Solutions

About Cyber Solutions:

Aon’s Cyber Solutions offers holistic cyber risk management, unsurpassed investigative skills, and proprietary technologies to help clients uncover and quantify cyber risks, protect critical assets, and recover from cyber incidents.

General Disclaimer

This material has been prepared for informational purposes only and should not be relied on for any other purpose. You should consult with your own professional advisors or IT specialists before implementing any recommendation or following the guidance provided herein. Further, the information provided and the statements expressed are not intended to address the circumstances of any particular individual or entity. Although we endeavor to provide accurate and timely information and use sources that we consider reliable, there can be no guarantee that such information is accurate as of the date it is received or that it will continue to be accurate in the future.

Terms of Use

The contents herein may not be reproduced, reused, reprinted or redistributed without the expressed written consent of Aon, unless otherwise authorized by Aon. To use information contained herein, please write to our team.

Aon's Better Being Podcast

Our Better Being podcast series, hosted by Aon Chief Wellbeing Officer Rachel Fellowes, explores wellbeing strategies and resilience. This season we cover human sustainability, kindness in the workplace, how to measure wellbeing, managing grief and more.

Aon Insights Series Asia

Expert Views on Today's Risk Capital and Human Capital Issues

Aon Insights Series Pacific

Expert Views on Today's Risk Capital and Human Capital Issues

Aon Insights Series UK

Expert Views on Today's Risk Capital and Human Capital Issues

Construction and Infrastructure

The construction industry is under pressure from interconnected risks and notable macroeconomic developments. Learn how your organization can benefit from construction insurance and risk management.

Cyber Labs

Stay in the loop on today's most pressing cyber security matters.

Cyber Resilience

Our Cyber Resilience collection gives you access to Aon’s latest insights on the evolving landscape of cyber threats and risk mitigation measures. Reach out to our experts to discuss how to make the right decisions to strengthen your organization’s cyber resilience.

Employee Wellbeing

Our Employee Wellbeing collection gives you access to the latest insights from Aon's human capital team. You can also reach out to the team at any time for assistance with your employee wellbeing needs.

Environmental, Social and Governance Insights

Explore Aon's latest environmental social and governance (ESG) insights.

Q4 2023 Global Insurance Market Insights

Our Global Insurance Market Insights highlight insurance market trends across pricing, capacity, underwriting, limits, deductibles and coverages.

Regional Results

How do the top risks on business leaders’ minds differ by region and how can these risks be mitigated? Explore the regional results to learn more.

Human Capital Analytics

Our Human Capital Analytics collection gives you access to the latest insights from Aon's human capital team. Contact us to learn how Aon’s analytics capabilities helps organizations make better workforce decisions.

Insights for HR

Explore our hand-picked insights for human resources professionals.

Workforce

Our Workforce Collection provides access to the latest insights from Aon’s Human Capital team on topics ranging from health and benefits, retirement and talent practices. You can reach out to our team at any time to learn how we can help address emerging workforce challenges.

Mergers and Acquisitions

Our Mergers and Acquisitions (M&A) collection gives you access to the latest insights from Aon's thought leaders to help dealmakers make better decisions. Explore our latest insights and reach out to the team at any time for assistance with transaction challenges and opportunities.

Navigating Volatility

How do businesses navigate their way through new forms of volatility and make decisions that protect and grow their organizations?

Parametric Insurance

Our Parametric Insurance Collection provides ways your organization can benefit from this simple, straightforward and fast-paying risk transfer solution. Reach out to learn how we can help you make better decisions to manage your catastrophe exposures and near-term volatility.

Pay Transparency and Equity

Our Pay Transparency and Equity collection gives you access to the latest insights from Aon's human capital team on topics ranging from pay equity to diversity, equity and inclusion. Contact us to learn how we can help your organization address these issues.

Property Risk Management

Forecasters are predicting an extremely active 2024 Atlantic hurricane season. Take measures to build resilience to mitigate risk for hurricane-prone properties.

Technology

Our Technology Collection provides access to the latest insights from Aon's thought leaders on navigating the evolving risks and opportunities of technology. Reach out to the team to learn how we can help you use technology to make better decisions for the future.

Top 10 Global Risks

Trade, technology, weather and workforce stability are the central forces in today’s risk landscape.

Trade

Our Trade Collection gives you access to the latest insights from Aon's thought leaders on navigating the evolving risks and opportunities for international business. Reach out to our team to understand how to make better decisions around macro trends and why they matter to businesses.

Weather

With a changing climate, organizations in all sectors will need to protect their people and physical assets, reduce their carbon footprint, and invest in new solutions to thrive. Our Weather Collection provides you with critical insights to be prepared.

Workforce Resilience

Our Workforce Resilience collection gives you access to the latest insights from Aon's Human Capital team. You can reach out to the team at any time for questions about how we can assess gaps and help build a more resilience workforce.

More Like This

View All
View All
Subscribe CTA Banner