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Guest Essay: The urgent need to improve firmware security — especially in OT and IoT routers

The Last Watchdog

As our world becomes increasingly interconnected, the security of Operational Technology (OT) and Internet of Things (IoT) devices is more critical than ever. Equally alarming was the widespread presence of known vulnerabilities, or “n-day” vulnerabilities, in the firmware images.

Firmware 100
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MyBook Users Urged to Unplug Devices from Internet

Krebs on Security

Hard drive giant Western Digital is urging users of its MyBook Live brand of network storage drives to disconnect them from the Internet, warning that malicious hackers are remotely wiping the drives using a critical flaw that can be triggered by anyone who knows the Internet address of an affected device.

Internet 328
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Sophos backports fix for CVE-2022-3236 for EOL firewall firmware versions due to ongoing attacks

Security Affairs

Sophos backports the patch for CVE-2022-3236 for end-of-life (EOL) firewall firmware versions due to ongoing attacks exploiting the issue. No action is required if organizations have upgraded their firewalls to a supported firmware version after September 2022. All the vulnerable devices are running end-of-life (EOL) firmware.

Firmware 132
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IoT Unravelled Part 2: IP Addresses, Network, Zigbee, Custom Firmware and Soldering

Troy Hunt

Let's drill into all that and then go deeper into custom firmware and soldering too. I can easily block a device from talking to the internet, throttle its connection, see which online services it's communicating with and access a whole host of other information about it. Why is this so hard?!

Firmware 337
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CosmicStrand: the discovery of a sophisticated UEFI firmware rootkit

SecureList

One of the main draws towards malware nested in such low levels of the operating system is that it is extremely difficult to detect and, in the case of firmware rootkits, will ensure a computer remains in an infected state even if the operating system is reinstalled or the user replaces the machine’s hard drive entirely.

Firmware 145
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MoonBounce: the dark side of UEFI firmware

SecureList

At the end of 2021, we were made aware of a UEFI firmware-level compromise through logs from our Firmware Scanner , which has been integrated into Kaspersky products since the beginning of 2019. This one is made up of implants found in the UEFI firmware within the SPI flash, a non-volatile storage external to the hard drive.

Firmware 145
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Dynamic analysis of firmware components in IoT devices

SecureList

As a rule, this means that the source code of the device’s firmware is unavailable and all the researcher can use is the user manual and a few threads on some user forum discussing the device’s operation. The vulnerability assessment of IoT/IIoT devices is based on analyzing their firmware.

Firmware 106