These patterns indicate attempted exploitation of CVE-2019-11043 or IMAP injection.
PHP version 5.6.40, released in January 2019, was the final security release for the PHP 5.6 branch. While it addressed several critical flaws, it has been since December 31, 2018, meaning it no longer receives official security updates and is highly vulnerable to modern exploits. Verified Vulnerabilities in PHP 5.6.40 php version 5640 vulnerabilities verified
A heap overflow vulnerability is present in the gd library, which is used by PHP for image processing. An attacker can exploit this vulnerability by providing a malicious image, potentially leading to arbitrary code execution or denial-of-service (DoS) attacks. Verified Vulnerabilities in PHP 5
# DANGEROUS - For isolation only FROM php:5.6.40-apache RUN apt-get update && apt-get install -y fail2ban # Disable all network egress except to database Each week includes objectives
Schedule overview (6 weeks, 3 sessions/week, 2–3 hours/session). Each week includes objectives, required tools, deliverables, and an optional stretch task.