North Korea’s Lazarus group uses vulnerable Dell driver to blind security solutions

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The notorious North Korean state-sponsored hacker group Lazarus has begun exploiting a known vulnerability in an OEM driver developed by Dell to evade detection by security solutions. This is a prime example of why it’s important to always keep third-party PC manufacturer software, which is often neglected, up to date, as well as to add vulnerable versions to blocklists.

“The most notable tool delivered by the attackers was a user-mode module that gained the ability to read and write kernel memory due to the CVE-2021-21551 vulnerability in a legitimate Dell driver,” security researchers from antivirus firm ESET said in a recent report. “This is the first ever recorded abuse of this vulnerability in the wild. The attackers then used their kernel memory write access to disable seven mechanisms the Windows operating system offers to monitor its actions, like registry, file system, process creation, event tracing etc., basically blinding security solutions in a very generic and robust way.”

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October Is Cybersecurity Awareness Month

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For the past nineteen years, October has been Cybersecurity Awareness Month here in the US, and that event that has always been part advice and part ridicule. I tend to fall on the apathy end of the spectrum; I don’t think I’ve ever mentioned it before. But the memes can be funny.

Here’s a decent rundown of some of the chatter.

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USN-5658-1: DHCP vulnerabilities

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It was discovered that DHCP incorrectly handled option reference counting.
A remote attacker could possibly use this issue to cause DHCP servers to
crash, resulting in a denial of service. (CVE-2022-2928)

It was discovered that DHCP incorrectly handled certain memory operations.
A remote attacker could possibly use this issue to cause DHCP clients and
servers to consume resources, leading to a denial of service.
(CVE-2022-2929)

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golang-1.18.7-1.fc36

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FEDORA-2022-0e313cc582

Packages in this update:

golang-1.18.7-1.fc36

Update description:

This release includes security fixes to the archive/tar, net/http/httputil, and regexp packages, as well as bug fixes to the compiler, the linker, and the go/types package. See the Go 1.18.7 milestone on the issue tracker for details.

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