Details have emerged about a now-patched high-severity vulnerability in the Linux kernel that could potentially be abused to escape a container in order to execute arbitrary commands on the container host. The shortcoming resides in a Linux kernel feature called control groups, also referred to as cgroups version 1 (v1), which allows processes to be organized into hierarchical … [Read more...] about New Linux Kernel cgroups Vulnerability Could Let Attackers Escape Container
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Kubernetes Container Escape Using Linux Kernel Exploit
On Jan. 18, 2022, researchers found a heap base buffer overflow flaw (CVE-2022-0185) in the Linux kernel (5.1-rc1+) function “legacy_parse_param” of filesystem context functionality, which allows an out-of-bounds write in kernel memory. Using this primitive, an unprivileged attacker can escalate its privilege to root, bypassing any Linux namespace restrictions. CVE-2022-0185 … [Read more...] about Kubernetes Container Escape Using Linux Kernel Exploit
How to Enable Kernel Exploit Prevention
Introduction This document and video will demonstrate how to enable kernel exploit prevention to protect hosts from sophisticated attacks that attempt kernel code execution. Video Overview Malware, and in particular ransomware, is increasingly using sophisticated attack chains to bypass traditional AV and execute successfully. As an example, the Robinhood … [Read more...] about How to Enable Kernel Exploit Prevention