Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

IoT
6/1/2020
03:35 PM
50%
50%

26 IoT Flaws Enable Denial-of-Service Attacks, Privilege Escalation

Research details vulnerabilities in the Zephyr Real Time Operating Systems and MCUboot, both used in IoT devices and sensors.

Newly discovered vulnerabilities in Internet of Things (IoT) components could expose a range of connected devices to denial-of-service (DoS) attacks and privilege escalation, a researcher with NCC Group reports.

The report details 26 vulnerabilities in the Zephyr Real Time Operating Systems (RTOS), which is specifically designed for IoT applications, and MCUboot, an open source, hardware-independent bootloader seen as a "companion project" to Zephyr, said NCC Group technical director Jeremy Boone in a blog post on the research, which was conducted in January and February of 2020. 

Both of these components exist in a range of IoT sensors and devices including baby monitors, LEDs, smart wearables, and IoT wireless gateways. Zephyr RTOS is supported by several major vendors including Intel, NXP, Nordic Semiconductor, and Texas Instruments; it also supports a wide range of chipset architectures and development kits. 

NCC Group discovered 25 vulnerabilities affecting the Zephyr RTOS and one affecting MCUboot. Researchers found both locally and remotely exploitable memory corruption flaws, multiple paths that could let a compromised user application to escalate privilege to kernel mode, and multiple weaknesses in the design of certain exploit mitigation systems that exist in the kernel.

As of the research publication date, 15 of these 26 problems have been addressed.

"The remaining unpatched findings pose a low overall risk as they represent denial of service vulnerabilities, or opportunities to further harden the kernel by improving existing exploit mitigation systems," the report states. Zephyr has indicated to NCC Group that these lower-risk issues are outside the 90-day embargo policy and they will address them in a future release. 

Read more details and download the full findings here.

 
 
 
 
 
 
Learn from industry experts in a setting that is conducive to interaction and conversation about how to prepare for that "really  bad day" in cybersecurity. Click for more information and to register
Dark Reading's Quick Hits delivers a brief synopsis and summary of the significance of breaking news events. For more information from the original source of the news item, please follow the link provided in this article. View Full Bio
 

Recommended Reading:

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
News
FluBot Malware's Rapid Spread May Soon Hit US Phones
Kelly Sheridan, Staff Editor, Dark Reading,  4/28/2021
Slideshows
7 Modern-Day Cybersecurity Realities
Steve Zurier, Contributing Writer,  4/30/2021
Commentary
How to Secure Employees' Home Wi-Fi Networks
Bert Kashyap, CEO and Co-Founder at SecureW2,  4/28/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-31755
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31756
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copie...
CVE-2021-31757
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setVLAN allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31758
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setportList allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31458
PUBLISHED: 2021-05-07
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handlin...