Apache Httpd 2.4.18 Exploit !!link!! -

Apache HTTP Server 2.4.18, while an older version, contains several critical vulnerabilities that allow for local root privilege escalation, denial of service (DoS), and certificate bypass.  Critical Exploits & Vulnerabilities 

The Apache HTTP Server version 2.4.18 (released in late 2015) is widely known in the cybersecurity community as a classic "legacy" target, frequently appearing in penetration testing labs like Hack The Box (HTB). apache httpd 2.4.18 exploit

As he dug deeper, John discovered that the attacker had been trying to use the server as a pivot point to gain access to other internal systems. They had attempted to use the server to scan for other vulnerable hosts on the network, but John's security measures had prevented them from succeeding. Apache HTTP Server 2

GET / HTTP/1.1
Host: vulnerable-apache-server
Authorization: Basic $(python -c 'print "A" * 10000')

Eventually, the entry point was not Apache, but an outdated OpenSSL 1.0.2g (DROWN attack) and a misconfigured mod_dav allowed file upload. The exploit chain used Apache as a vector, but no native 2.4.18 RCE. Eventually, the entry point was not Apache ,

The Mechanism: This is a Use-After-Free (UAF) flaw in the scoreboard. A less-privileged child process (like a PHP script) can manipulate the shared memory to gain root privileges when the server performs a graceful restart.

Case Study: Ubuntu 16.04 LTS & The "Phantom Exploit"

Let’s ground this in reality. In 2020, a bug bounty hunter reported an "Apache 2.4.18 exploit" against a Fortune 500 company. The server returned Server: Apache/2.4.18 (Ubuntu).