The Armis research team, Armis Labs, have discovered 11 zero day vulnerabilities in VxWorks®, the most widely used operating system you may never heard about. VxWorks is used by over 2 billion devices including critical industrial, medical and enterprise devices. Dubbed “URGENT/11,” the vulnerabilities reside in VxWorks’ TCP/IP stack (IPnet), impacting all versions since version 6.5, and are a rare example of vulnerabilities found to affect the operating system over the last 13 years. Armis has worked closely with Wind River®, the maintainer of VxWorks, and the latest VxWorks 7 released on July 19 contains fixes for all the discovered vulnerabilities.
Six of the vulnerabilities are classified as critical and enable Remote Code Execution (RCE). The remaining vulnerabilities are classified as denial of service, information leaks or logical flaws. URGENT/11 is serious as it enables attackers to take over devices with no user interaction required, and even bypass perimeter security devices such as firewalls and NAT solutions. These devastating traits make these vulnerabilities ‘wormable,’ meaning they can be used to propagate malware into and within networks. Such an attack has a severe potential, resembling that of the EternalBlue vulnerability, used to spread the WannaCry malware.
Foreign Cyber Actors Target Home and Office Routers and Networked Devices Worldwide
The FBI recommends any owner of small office and home office routers power cycle (reboot) the devices. Foreign cyber actors have compromised hundreds of thousands of home and office routers and other networked devices worldwide. The actors used VPNFilter malware to target small office and home office routers. The malware is able to perform multiple functions, including possible information collection, device exploitation, and blocking network traffic.
The size and scope of the infrastructure impacted by VPNFilter malware is significant. The malware targets routers produced by several manufacturers and network-attached storage devices by at least one manufacturer. The initial infection vector for this malware is currently unknown.
VPNFilter is able to render small office and home office routers inoperable. The malware can potentially also collect information passing through the router. Detection and analysis of the malware’s network activity is complicated by its use of encryption and misattributable networks.
The FBI recommends any owner of small office and home office routers reboot the devices to temporarily disrupt the malware and aid the potential identification of infected devices. Owners are advised to consider disabling remote management settings on devices and secure with strong passwords and encryption when enabled. Network devices should be upgraded to the latest available versions of firmware.
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