This post is part of a series about Offensive BPF that I’m working on to learn about BPF to understand attacks and defenses. Click the “ebpf” tag to see all relevant posts.
In the previous posts I spend time learning about bpftrace which is quite powerful. This post is focused on basics and using existing BPF tools, rather then building new BPF programs from scratch.
Living off the land: bpfcc-tools Performance and observability teams are pushing for BPF tooling to be present in production.
On September 29, Ash Daulton, along with the cPanel Security Team, reported a path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.29 to the Apache security team. The issue was fixed within two days, under CVE-2021-41773, and the patch was released on October 4. Apache urged to deploy the fix, as it is already being actively exploited.