CVE-2025-24348

Executive Summary

CVE-2025-24348 is a medium-severity vulnerability (CVSS 5.4) affecting the web application of ctrlX OS, specifically the "Network Interfaces" functionality. A remote authenticated attacker with low privileges can manipulate the wireless network configuration file via a crafted HTTP request. This could lead to unauthorized changes in network settings, potentially enabling further attacks or disrupting network connectivity. No public exploit code or patch is currently available.

CVSS Breakdown & Threat Level

• CVSS Score: 5.4 (Medium)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: Low (PR:L)
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: None (C:N)
• Integrity Impact: Low (I:L)
• Availability Impact: Low (A:L)

The threat level is moderate due to the requirement for authentication, but the low complexity and network-based attack vector make it exploitable by any authenticated user.

Deep Dive & Mechanics

The vulnerability resides in the "Network Interfaces" functionality of the ctrlX OS web application. The application fails to properly validate or sanitize user-supplied input when handling wireless network configuration files. An authenticated attacker can craft a malicious HTTP request that modifies the configuration file, potentially altering network settings such as SSID, encryption keys, or connection parameters.

The root cause is a lack of input validation (CWE-20) in the endpoint responsible for updating wireless configurations. The application likely trusts user input without proper checks, allowing arbitrary modifications to the configuration file.

Vulnerable vs. Patched Code

No specific code snippets are available. However, the vulnerable code likely resembles:

@app.route('/network/wireless/config', methods=['POST'])
def update_wireless_config():
    config_data = request.json
    # No validation of config_data
    with open('/etc/wireless/config.conf', 'w') as f:
        f.write(str(config_data))
    return "Config updated"

A patched version would include input validation and sanitization:

@app.route('/network/wireless/config', methods=['POST'])
def update_wireless_config():
    config_data = request.json
    # Validate config_data structure and values
    if not validate_wireless_config(config_data):
        return "Invalid config", 400
    # Sanitize input to prevent injection
    sanitized_config = sanitize_config(config_data)
    with open('/etc/wireless/config.conf', 'w') as f:
        f.write(sanitized_config)
    return "Config updated"

Exploitation & Lab Setup

Red Team

1. Setup: Deploy a ctrlX OS instance with the vulnerable web application.
2. Authenticate: Obtain low-privileged credentials (e.g., user:password).
3. Craft Payload: Create a malicious HTTP request targeting the wireless configuration endpoint.
4. Execute: Send the request to modify the configuration file.

Example exploit using curl:

curl -X POST https://target/network/wireless/config \
  -H "Content-Type: application/json" \
  -d '{"ssid": "EvilAP", "encryption": "none", "password": ""}'

Blue Team

1. Monitor: Watch for unusual HTTP requests to /network/wireless/config endpoint.
2. Audit: Review wireless configuration files for unauthorized changes.
3. Harden: Implement strict input validation and access controls on the configuration endpoint.

Indicators of Compromise (IOCs)

• Network: HTTP POST requests to /network/wireless/config with unusual payloads.
• File: Modified /etc/wireless/config.conf with unexpected SSIDs or encryption settings.
• Logs: Web server logs showing repeated attempts to modify wireless configuration.

Detection Engineering

YARA Rule

rule cve_2025_24348_wireless_config_modification {
    meta:
        description = "Detects attempts to modify wireless config via CVE-2025-24348"
        author = "Valters IT"
        date = "2025-03-01"
        reference = "CVE-2025-24348"
    strings:
        $config_path = "/network/wireless/config"
        $ssid = "ssid"
        $encryption = "encryption"
    condition:
        all of them
}

Sigma Rule

title: CVE-2025-24348 Wireless Config Modification
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects HTTP POST requests to the vulnerable endpoint
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: POST
        cs-uri-stem: /network/wireless/config
    condition: selection
falsepositives:
    - Legitimate configuration changes
level: medium

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-24348 Wireless Config Modification"; flow:to_server; http.method; content:"POST"; http.uri; content:"/network/wireless/config"; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

• Immediate: Restrict access to the wireless configuration endpoint to only authorized administrators.
• Short-term: Implement input validation and sanitization for all configuration endpoints.
• Long-term: Apply vendor patch when available. Monitor ctrlX OS security advisories for updates.

Valters IT
Securing Digital Frontiers