tl;dr Grab the release binary from our repo and have fun. Also, happy new year; 2021 couldn’t end soon enough. Background A while back, I was asked by one of my coworkers on the PSC team about ways in which to make their custom credit card data scanner cloud native to assess Kubernetes clusters. While … Continue reading Tool Release – insject: A Linux Namespace Injector →

Background Java Virtual Machines (JVMs) provide a number of mechanisms to inspect and modify the Java applications and the runtime they stand on. These include Java agents, JARs that are capable of modifying Java class files at runtime; and JVMTI agents, native libraries that can perform deep hooking into the innards of the JVM itself. … Continue reading Tool Release – shouganaiyo-loader: A Tool to Force JVM Attaches →

Having been in the game of auditing kprobe-based tracers for the past couple of years, and in light of this upcoming DEF CON on eBPF tracer race conditions (which you should go watch) being given by a friend of mine from the NYU(-Poly) (OSIR)IS(IS) lab, I figured I would wax poetic on some of the … Continue reading Some Musings on Common (eBPF) Linux Tracing Bugs →

This post is a technical discussion of the underlying vulnerability of CVE-2020-15257, and how it can be exploited. Our technical advisory on this issue is available here, but this post goes much further into the process that led to finding the issue, the practicalities of exploiting the vulnerability itself, various complications around fixing the issue, … Continue reading ABSTRACT SHIMMER (CVE-2020-15257): Host Networking is root-Equivalent, Again →