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.


10:00 AM
Connect Directly

New Mirai Variant Surfaces with Exploits for 9 Vulnerabilities Products

Impacted products include routers, IP cameras, DVRs, and smart TVs.

Nearly four years after Mirai first showed how ordinary Internet-connected devices could be turned into remotely controlled attack systems, variants of the malware continue to surface with troubling regularity.

This week researchers from Trend Micro reported discovering a brand-new Mirai variant designed to exploit a set of previously disclosed vulnerabilities in routers, IP cameras, DVRs, and other products from multiple vendors, including Comtrend, D-Link, MV Power, Symantec, and AVTech.

Among the nine vulnerabilities the malware can exploit is a remote code execution flaw in a router model from Comtrend (CVE-2020-10173) that gives attackers a way to take control of the network managed by the router. Until this point, only proof-of-concept code for exploiting the flaw — first disclosed in March — had been available.

Another relatively new vulnerability exploited by the latest Mirai version is a remote code execution issue in Netlink GPON Router 1.0.11 that at least one other Internet of Things (IoT) botnet — a variant of Gafgyt/Bashlite — has already exploited. The remaining seven vulnerabilities are all older ones previously exploited by other malware.

"The vulnerabilities used by this Mirai variant consist of a combination of old and new that help cast a wide net encompassing different types of connected devices," said Trend Micro in a blog Monday. "The nine vulnerabilities used in this campaign affect specific versions of IP cameras, smart TVs, and routers, among others."

The new Mirai version is at least the fourth that security researchers have come across just this year. In February, researchers at Trend Micro reported finding two Mirai variants — SORA and UNSTABLE — that targeted a security weakness in a video surveillance storage device from Rasilient. In March, bug hunters at Palo Alto Networks reported on Mukashi, a Mirai variant that targeted Zyxel network-attached storage (NAS) devices.

Attackers have used such variants to compromise vulnerable IoT devices and assemble them into botnets for launching distributed denial-of-service attacks, distributing malware, or carrying out other malicious activities.

While the latest Mirai version is capable of exploiting nine different vulnerabilities, some previous variants have incorporated exploits for far more. A version of the Echobot Mirai variant last December, for instance, packaged exploits for as many as 71 unique vulnerabilities, 13 of which were previously unexploited when the malware was released.

Myla Pilao, director of security research at Trend Micro, points to a couple of of reasons for attackers' continuing interest in building Mirai-like malware. The first, she says, is the growth in the number of IoT devices and the number of people using them, especially now with so many working from home.

The second reason is that many IoT devices continue to be vulnerable or are poorly secured and therefore easy attack targets, Pilao says. In many cases, attackers have been able to force their way into routers, IP cameras, smart TVs, and other Internet-connected devices by brute-force guessing passwords or by taking advantage of insecure configurations.

The trend highlights the need for organizations to pay closer attention to the procurement of IoT devices, she notes. "Implement [a] strict protocol in the purchase, test, deployment, and adoption of these devices into your network," Pilao says.

Make sure also to implement proper authentication and credential management processes and use encryption where possible.

"Develop a clear process for quality patch management and deployment," Pilao says. With more people working from home, organizations need to ensure that employees know how to properly patch vulnerable systems, she said.

Related Content:



Register now for this year's fully virtual Black Hat USA, scheduled to take place August 1–6, and get more information about the event on the Black Hat website. Click for detail on conference information and to register.

Jai Vijayan is a seasoned technology reporter with over 20 years of experience in IT trade journalism. He was most recently a Senior Editor at Computerworld, where he covered information security and data privacy issues for the publication. Over the course of his 20-year ... View Full Bio

Recommended Reading:

Comment  | 
Print  | 
More Insights
Newest First  |  Oldest First  |  Threaded View
Overcoming the Challenge of Shorter Certificate Lifespans
Mike Cooper, Founder & CEO of Revocent,  10/15/2020
7 Tips for Choosing Security Metrics That Matter
Ericka Chickowski, Contributing Writer,  10/19/2020
Register for Dark Reading Newsletters
White Papers
Current Issue
Special Report: Computing's New Normal
This special report examines how IT security organizations have adapted to the "new normal" of computing and what the long-term effects will be. Read it and get a unique set of perspectives on issues ranging from new threats & vulnerabilities as a result of remote working to how enterprise security strategy will be affected long term.
Flash Poll
How IT Security Organizations are Attacking the Cybersecurity Problem
How IT Security Organizations are Attacking the Cybersecurity Problem
The COVID-19 pandemic turned the world -- and enterprise computing -- on end. Here's a look at how cybersecurity teams are retrenching their defense strategies, rebuilding their teams, and selecting new technologies to stop the oncoming rise of online attacks.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
PUBLISHED: 2020-10-21
BigBlueButton through 2.2.8 uses Ghostscript for processing of uploaded EPS documents, and consequently may be subject to attacks related to a "schwache Sandbox."
PUBLISHED: 2020-10-21
BigBlueButton before 2.2.8 (or earlier) does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.
PUBLISHED: 2020-10-21
In BigBlueButton before 2.2.8 (or earlier), the client-side Mute button only signifies that the server should stop accepting audio data from the client. It does not directly configure the client to stop sending audio data to the server, and thus a modified server could store the audio data and/or tr...
PUBLISHED: 2020-10-21
In BigBlueButton before 2.2.8 (or earlier), uploaded presentations are sent to clients without a Content-Type header, which allows XSS, as demonstrated by a .png file extension for an HTML document.
PUBLISHED: 2020-10-21
BigBlueButton through 2.2.8 records a video meeting despite the deactivation of video recording in the user interface. This may result in data storage beyond what is authorized for a specific meeting topic or participant.