McAfee Researchers Exploit Smart Plug to Attack Smart TV!
Researchers from McAfee have demonstrated how a flaw in a Belkin smart switch can be used to access other connected devices on the same network as the switch.
One of the recurrent themes of Internet of Things security might be summarized as “its not the THING, stupid!” In other words: the value of the individual endpoint is irrelevant. A webcam, a baby monitor, a connected TV – none of these, by themselves, hold much sensitive information or represent much computing power. Rather, it is the value of the things in aggregate, or their ability to open a path to other, more valuable things that matters.
Now new research from McAfee is putting that to the test, by demonstrating how a flaw in a Belkin smart switch can be used to access other connected devices on the same network as the switch.
In a recent blog post, McAfee said that it has uncovered a buffer overflow flaw in a component of the Wemo Insight Smart Plug that could allow an attacker to run his or her own code on the device and use it to access and attack other devices on the same network as the smart plug.
The vulnerability, CVE-2018-6692, is in a software library known as “libUPnPHndlr.so.” The process McAfee used to discover it is lengthy and complex, with researchers disassembling and reverse engineering the Wemo Insight Smart Plug. If you want a nice write up on how to do this, including tool talk and photos, check out their blog post.
For everyone else, what’s important to know is that Wemo Insight plugs are just tiny little Linux devices, running the OpenWRT embedded Linux OS – and not a very stripped down version of OpenWRT either. The researchers found two exploitable vectors on it: a write-what-where condition allows an attacker to write data to an arbitrary location in memory; by continuing to overwrite data on the stack, an attacker can overwrite the $RA register or return address for the calling function, providing the attacker control of the execution flow.
By using Linux commands left enabled on the smart plug, the researchers found they were able to download and execute any script, run NetCat, which could allow an attacker to write a script to create a reverse shell on the device. While attacks to the device itself are limited to turning the device on or off, the potential damage grows where the plug is networked with other devices. “The plug could now be an entry point to a larger attack. Later in this report, we will look at one possible attack,” the McAfee researchers concluded.
To prove that point, the McAfee researchers developed a proof of concept attack in which a compromised plug used a built-in UPnP library to poke a hole in the network router, creating a backdoor channel for an attacker to connect remotely, unnoticed on the network.
With that access, the researchers were able to use a remote shell to control a TCL smart TV connected to the same network as the Wemo plug by exploiting a Roku API implementation on the TV that accepts unencrypted and unauthenticated HTTP GET/POST requests. “Using the Wemo as a middleman, the attacker can power the TV on and off, install or uninstall applications, and access arbitrary online content,” the researchers found.
And smart TVs are just one visible example of how the Wemo plug could be used to pivot to other devices on a network. “With the attacker having established a foothold on the network and able to open arbitrary ports, any machine connected to the network is at risk. Because attacks can be conducted through the Wemo and the port mappings generated using this exploit are not visible from the router’s administration page, the attacker’s footprint remains small and hard to detect,” the researchers concluded.
This isn’t the first time that Wemo products have been the focus of security researchers. At the 2017 Security of Things Forum, Scott Tenaglia of the firm Invincea revealed a number of security flaws in Wemo home automation devices including vulnerability to a type of attack known as SQL injection. By sending purposely mis-formed updates to WeMo devices, Tenaglia found he could create his own malicious executable that was run by the WeMo smart device, allowing him to take control of those devices.
- Sailpoint IIQ Consultant
- Up to £75,000
SailPoint IIQ consultant- London We are looking for a strong SailPoint IIQ consultant to work for this global enterprise, in this position you will be the lead consultant in regard to the IAM and PAM tools Duties include Responsible for designing, developing, testing, implementing, and integrating IAM (SailPoint) systems and solutions. Assessing requirements for Identity and Access Management solutions to meet stakeholders needs. Provide support for production IAM infrastructure systems and processes. Ensures the maintenance, patching, operating, and monitoring of IAM systems. Ensures senior management and staff are informed of any changes and updates in a timely manner. Experience with Maintaining and supporting SailPoint IIQ Assessing requirements for Privilege Access Management solutions to meet stakeholders needs We are looking for someone with the following experience SailPoint IIQ experience Expertise working with SailPoint Identity IQ platform - Access Lifecycle Management, Certifications, Role Management Expertise in onboarding applications with various connectors like Active Directory, JDBC, SCIM 2.0, Azure Active Directory Expertise in developing APIs (SCIM, REST) leveraging Java based developmentExperience of Privileged Access Management concepts and use cases Unfortunatly we are unable to provide sponsorship for this opportunity, therefore applications will need to be able to work in the UK
- SailPoint Consultant- Netherland-
- upto €700 per day
We are looking for a highly skilled SailPoint IIQ Consultant to work on a major deployment project. The ideal candidate will have experience with all aspects of SailPoint IIQ, including development, configuration, and administration. They will also be able to work independently and as part of a team to deliver high-quality results. · Responsibilities · Develop and configure Sailpoint IIQ solutions · Integrate SailPoint IIQ with other systems · Support SailPoint IIQ deployments · Provide technical support to users If you are a highly skilled SailPoint IIQ consultant who is looking for their next project, we encourage you to apply. look forward to hearing from you!
- Lead CyberArk deployment Consultant
- Upto £80,000 plus benefits
CyberArk Consultant is needed to be responsible for leading the deployment of CyberArk solutions for this expanding IT services business, You will work with customer both pre and post sales, getting involved in CyberArk Solution Design, helping to create CyberArk Strategic Roadmaps, on-boarding accounts, product and process integration into the CyberArk Solution and Proviso of Installation and technical Documentation. We are looking for this individual to have experience in: Installation of CyberArk PAS for V11.X and V12.X (Vault, DR Vault, Central Policy Manager and Password Vault Web Access) Upgrade of CyberArk from V9 and V10 (Vault, DR Vault, Central Policy Manager and Password Vault Web Access) Installation and Upgrade of Privilege Session Manager and Privilege Session Manager Proxy As some of your client will be government site, all individual will need to be put through SC clearance, therefore you must be eligible to receive this and happy to be put through(With a British Citizen or to have lived in the UK for the past 5 years) We are unable to provide work visa sponsorship for this opportunity
- Senior Business Analyst - Outside IR35 Contract, SC Clearance Required, London
- £400 per day outside IR35
Senior Business Analyst - Outside IR35 Contract, SC Clearance Required, Based in London Project- to engage with colleagues and stakeholders to investigate and model business functions, processes, information flows and data structures, using a range of business analysis techniques. • You will translate the solution to the business problem into detailed requirements by creating user stories and well-defined acceptance criteria. • Elicit end-to-end business requirements for a live cross-government service • Working across the Government departments to bring together varied business and operational outcomes to form a holistic overall set of service requirements Current SC clearance is required. As is the ability to travel to London.