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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 144
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PixieFail: Nine flaws in UEFI open-source reference implementation could have severe impacts

Security Affairs

Unified Extensible Firmware Interface (UEFI) is a specification that defines the architecture of the platform firmware used for booting the computer hardware and its interface for interaction with the operating system. ” reads the advisory. ” states CERT/CC. . ” states CERT/CC.

Firmware 103
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Sunburst: connecting the dots in the DNS requests

SecureList

At the moment, we identified approximately ~100 customers who downloaded the trojanized package containing the Sunburst backdoor. Other advanced threat groups are also known to adopt similar strategies, for instance with hardware or firmware implants, which “sleep” for weeks or months before connecting to their C2 infrastructure.

DNS 74
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CVE-2021-40847 flaw in Netgear SOHO routers could allow remote code execution

Security Affairs

The flaw, tracked as CVE-2021-40847, resides in the source of a third-party component included in the firmware of many Netgear devices. Experts noticed that database updates from Netgear are unsigned and downloaded via Hypertext Transfer Protocol (HTTP), allowing the attacker to carry out a MitM attack on the device.

DNS 127
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Smart Tvs require even smarter security measures

Security Boulevard

On bootup, the malware will try to reach out to command-and-control (C2) threat infrastructure to receive instructions and download more payloads. Initially the malware has been downloading a payload to perform pay-per-click, or ad-click, fraud. Though I personally wouldn't like my devices being used for click-fraud either.

Firmware 104
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Update now! Many HP printers affected by three critical security vulnerabilities

Malwarebytes

The Link-Local Multicast Name Resolution (LLMNR) is a protocol based on the Domain Name System (DNS) packet format that allows both IPv4 and IPv6 hosts to perform name resolution for hosts on the same local link. Its main function is to resolve host names to facilitate communication between hosts on local networks. How to update your printer.

Firmware 145
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Experts share details of five flaws that can be chained to hack Netgear RAX30 Routers 

Security Affairs

An attacker could also use these vulnerabilities to access and control networked smart devices (security cameras, thermostats, smart locks), change router settings including credentials or DNS settings, or use a compromised network to launch attacks against other devices or networks.” ” reads the advisory published by NETGEAR.

Hacking 94