-
Past week Wiz blogged about Overlayfs bugs that can be abused on Ubuntu Kernels to perform privilege escalation, named GameOver(lay) read more here. Those are CVE-2023-2640 and CVE-2023-32629, also Datadog has another writeup about a previous Overlayfs upstream vulnerability CVE-2023-0386. Background All these are …
Read More -
The Kernel Lockdown feature that was merged in Linux 5.4 is designed to prevent both direct and indirect access to a running kernel image, attempting to protect against unauthorized modification of the kernel image and to prevent access to security and cryptographic data located in kernel memory, whilst still …
Read More -
Due to the security features that Linux offers, like booting directly into a readonly filesystem, making filesystems readonly at runtime for apps and containers, some attacks have been using what is known as "fileless binary execution" to avoid such protections, and gain the ability to execute binaries …
Read More -
At the eBPF Summit 2021, I gave a talk about how to take advantage of eBPF to try to bridge some cloud and IoT security features. My Talk can be found here: BPF to bridge Cloud and IoT Linux Security on youtube All eBPF Summit 2021 here: eBPF Summit 2021 Youtube Channel
Read More