Vulnerability-Scanning

I run two coding agents against this lab. Codex found the problem and Claude Code fixed it, and keeping those two jobs in different hands turned out to be the most useful part of the whole exercise. The short version: a full vulnerability scan reported 2042 actionable findings — 46 critical, 764 high — and 1751 of them were in container images. Ten waves of updates later, the same scanner reports 1497 actionable, 21 critical, 570 high. ...

I wanted a real vulnerability scanner in the lab — something that port-scans a host, throws a big pile of network vulnerability tests at it, and tells me what to fix by severity. OpenVAS (now Greenbone Community Edition) is the obvious choice, and it ships as a Docker stack. This is the honest write-up: the install, the three separate things that broke, one of which was my own fault, and what the scanner actually found when I pointed it at my own box. Nothing here is polished — I got a couple of things wrong along the way and I’m leaving those in, because that’s where the useful bits are. ...