192.168.56.XXX

Executive Summary

This Metasploitable 2 host exposes 10 open services with 4 critical and 3 high-severity vulnerabilities, the most severe being CVE-2011-2523 (CVSS 10.0) — the well-documented vsftpd 2.3.4 backdoor that grants unauthenticated root access via a crafted FTP login.

The combination of an exploitable Samba RCE (CVE-2017-7494), an OpenSSL PRNG flaw that compromises every SSH key generated on this build (CVE-2008-0166), and a MySQL authentication bypass (CVE-2012-2122) makes this host trivial to fully compromise with off-the-shelf Metasploit modules.

Vulnerability Breakdown

Critical — patch immediately

• vsftpd 2.3.4 backdoor — replace with current vsftpd 3.x or proftpd; or remove FTP entirely
• Samba 3.0.20 (CVE-2007-2447, CVE-2017-7494) — upgrade to Samba ≥ 4.6.4 with nt pipe support = no set in smb.conf
• OpenSSH 4.7 / Debian OpenSSL — regenerate all host and user keys after upgrading openssl-blacklist

High — schedule within 7 days

• Apache 2.2.8 — upgrade to Apache 2.4 LTS; mod_isapi is Windows-only but the integer overflow affects all 2.2.x
• MySQL 5.0.51a — upgrade to MySQL 5.7 LTS or migrate to MariaDB 10.6+; bind to localhost if remote access is not required

Remediation Steps

1. Take this host off the network until the critical issues are resolved — every open service has at least one unauthenticated RCE
2. apt-get update && apt-get dist-upgrade on the underlying Ubuntu, then rebuild each service from current packages
3. Audit the Samba shares and disable any guest-writable shares; rotate all credentials that were on this host
4. Replace VNC (no auth, protocol 3.3) with SSH X11 forwarding or no remote display at all
5. Confirm Postfix / PostgreSQL bindings are loopback-only after the upgrade

Compliance Notes

This host fails PCI-DSS 11.2 (quarterly vulnerability scans must show no high or critical findings), CIS Ubuntu Benchmark 5.1 (unnecessary services running), and NIST 800-53 CM-7 (least functionality).