CVE-2024-7699

Q: What is the severity of CVE-2024-7699?

CVE-2024-7699 has a CVSS score of 8.8 (HIGH). This vulnerability allows low-privileged remote attackers to execute arbitrary operating system commands with root privileges by exploiting improper input sanitization. It affects systems running vulnerable software that processes user-supplied data without proper neutralization. Organizations using affected products are at risk of complete system compromise.

8.8 HIGH

Remote Code Execution

📋 TL;DR

This vulnerability allows low-privileged remote attackers to execute arbitrary operating system commands with root privileges by exploiting improper input sanitization. It affects systems running vulnerable software that processes user-supplied data without proper neutralization. Organizations using affected products are at risk of complete system compromise.

💻 Affected Systems

Products:

Specific product information not provided in reference

Versions: Version range not specified in provided reference

Operating Systems: Linux-based systems likely affected

Default Config Vulnerable: ⚠️ Yes

Notes: Based on CWE-78 (OS Command Injection), this typically affects web applications, APIs, or services that process user input and execute system commands.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system takeover with root access, data exfiltration, ransomware deployment, and lateral movement across the network.

🟠

Likely Case

Initial foothold leading to privilege escalation, credential harvesting, and installation of persistent backdoors.

🟢

If Mitigated

Contained impact with limited data exposure if network segmentation and least privilege controls are properly implemented.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: LOW

CWE-78 vulnerabilities are typically straightforward to exploit once the injection point is identified. The reference advisory suggests low privilege access is required.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not specified

Vendor Advisory: https://cert.vde.com/en/advisories/VDE-2024-039

Restart Required: No

Instructions:

1. Check vendor advisory for specific patch information. 2. Apply security updates when available. 3. Test in non-production environment first. 4. Monitor vendor communications for updates.

🔧 Temporary Workarounds

Input Validation and Sanitization

all

Implement strict input validation and sanitize all user-supplied data before processing

# Application-specific implementation required

Network Segmentation

linux

Isolate affected systems from critical network segments

# Use firewall rules to restrict access
# iptables -A INPUT -s trusted_network -j ACCEPT
# iptables -A INPUT -j DROP

🧯 If You Can't Patch

Implement strict input validation and parameterized commands in application code
Deploy web application firewall (WAF) with command injection rules

🔍 How to Verify

Check if Vulnerable:

Review application code for command execution functions with user input, test with controlled input validation

Check Version:

# Check with vendor-specific commands
# rpm -qa | grep package_name
# dpkg -l | grep package_name

Verify Fix Applied:

Verify input validation prevents command injection through security testing

📡 Detection & Monitoring

Log Indicators:

Unusual command execution patterns
Process creation from web service accounts
Suspicious system commands in application logs

Network Indicators:

Unexpected outbound connections from application servers
Traffic to known malicious IPs

SIEM Query:

source="application.logs" AND (command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*")

📊 Metadata

CVE ID: CVE-2024-7699

CVSS v3 Score: 8.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-78

Published: September 10, 2024

Last Updated: September 27, 2024

🔗 References

https://cert.vde.com/en/advisories/VDE-2024-039 Third Party Advisory

📋 TL;DR

💻 Affected Systems

📦 What is this software?

Fl Mguard 2102 Firmware by Phoenixcontact

Fl Mguard 2105 Firmware by Phoenixcontact

Fl Mguard 4102 Pci Firmware by Phoenixcontact

Fl Mguard 4102 Pcie Firmware by Phoenixcontact

Fl Mguard 4302 Firmware by Phoenixcontact

Fl Mguard 4305 Firmware by Phoenixcontact

Fl Mguard Centerport Vpn 1000 Firmware by Phoenixcontact

Fl Mguard Core Tx Firmware by Phoenixcontact

Fl Mguard Core Tx Vpn Firmware by Phoenixcontact

Fl Mguard Delta Tx\/tx Firmware by Phoenixcontact

Fl Mguard Delta Tx\/tx Vpn Firmware by Phoenixcontact

Fl Mguard Gt\/gt Firmware by Phoenixcontact

Fl Mguard Gt\/gt Vpn Firmware by Phoenixcontact

Fl Mguard Pci4000 Firmware by Phoenixcontact

Fl Mguard Pci4000 Vpn Firmware by Phoenixcontact

Fl Mguard Pcie4000 Firmware by Phoenixcontact

Fl Mguard Pcie4000 Vpn Firmware by Phoenixcontact

Fl Mguard Rs2000 Tx\/tx B Firmware by Phoenixcontact

Fl Mguard Rs2000 Tx\/tx Vpn Firmware by Phoenixcontact

Fl Mguard Rs2005 Tx Vpn Firmware by Phoenixcontact

Fl Mguard Rs4000 Tx\/tx Firmware by Phoenixcontact

Fl Mguard Rs4000 Tx\/tx M Firmware by Phoenixcontact

Fl Mguard Rs4000 Tx\/tx P Firmware by Phoenixcontact

Fl Mguard Rs4000 Tx\/tx Vpn Firmware by Phoenixcontact

Fl Mguard Rs4004 Tx\/dtx Firmware by Phoenixcontact

Fl Mguard Rs4004 Tx\/dtx Vpn Firmware by Phoenixcontact

Fl Mguard Smart2 Firmware by Phoenixcontact

Fl Mguard Smart2 Vpn Firmware by Phoenixcontact

Tc Mguard Rs2000 3g Vpn Firmware by Phoenixcontact

Tc Mguard Rs2000 4g Att Vpn Firmware by Phoenixcontact

Tc Mguard Rs2000 4g Vpn Firmware by Phoenixcontact

Tc Mguard Rs2000 4g Vzw Vpn Firmware by Phoenixcontact

Tc Mguard Rs4000 3g Vpn Firmware by Phoenixcontact

Tc Mguard Rs4000 4g Att Vpn Firmware by Phoenixcontact

Tc Mguard Rs4000 4g Vpn Firmware by Phoenixcontact

Tc Mguard Rs4000 4g Vzw Vpn Firmware by Phoenixcontact