CVE-2024-25735: Apollo VX20 Information Disclosure Flaw

CVE-2024-25735 Overview

CVE-2024-25735 is a critical information disclosure vulnerability affecting WyreStorm Apollo VX20 devices running firmware versions prior to 1.3.58. The vulnerability allows remote attackers to discover cleartext passwords by sending a GET request to the /device/config endpoint via the SoftAP interface. This represents a significant security flaw in the device's configuration management that exposes sensitive credential data without authentication.

Critical Impact

Remote unauthenticated attackers can retrieve cleartext passwords from vulnerable WyreStorm Apollo VX20 devices, potentially leading to complete device compromise and network intrusion.

Affected Products

• WyreStorm Apollo VX20 Firmware (versions before 1.3.58)
• WyreStorm Apollo VX20 Hardware

Discovery Timeline

• 2024-03-27 - CVE-2024-25735 published to NVD
• 2025-11-04 - Last updated in NVD database

Technical Details for CVE-2024-25735

Vulnerability Analysis

This vulnerability falls under the category of Sensitive Data Exposure and Cleartext Transmission of Sensitive Information (CWE-319). The WyreStorm Apollo VX20 device exposes its configuration endpoint without proper access controls or encryption, allowing any network-accessible attacker to retrieve stored credentials in plaintext.

The attack requires no authentication and can be executed remotely over the network. When successful, attackers gain access to device passwords that may be reused across other systems in the network infrastructure. This vulnerability has an extremely high likelihood of exploitation in real-world scenarios.

Root Cause

The root cause is the insecure implementation of the device configuration API. The /device/config endpoint on the SoftAP interface returns sensitive configuration data, including cleartext passwords, without requiring any form of authentication or authorization. Additionally, the passwords are stored and transmitted in cleartext rather than being hashed or encrypted, violating fundamental security principles for credential management.

Attack Vector

The attack vector is network-based and requires no user interaction. An attacker with network access to the SoftAP interface of a vulnerable WyreStorm Apollo VX20 device can exploit this vulnerability by sending a simple HTTP GET request to the /device/config endpoint. The device responds with configuration data containing cleartext passwords.

The attack flow involves:

1. Attacker identifies a WyreStorm Apollo VX20 device on the network
2. Attacker connects to the device's SoftAP interface
3. Attacker sends a GET request to /device/config
4. Device responds with configuration containing cleartext passwords
5. Attacker uses retrieved credentials for further access

For technical details on exploitation, refer to the Full Disclosure Mailing List Post and the Packet Storm Security File.

Detection Methods for CVE-2024-25735

Indicators of Compromise

• Unusual HTTP GET requests to /device/config endpoint on WyreStorm devices
• Multiple configuration endpoint access attempts from external IP addresses
• Unauthorized access attempts using credentials that were not legitimately distributed
• Network traffic analysis revealing cleartext password transmission from device endpoints

Detection Strategies

• Monitor network traffic for HTTP requests targeting /device/config on WyreStorm Apollo VX20 devices
• Implement intrusion detection rules to alert on configuration endpoint access from untrusted sources
• Review authentication logs for credential usage patterns that may indicate stolen password exploitation
• Deploy network segmentation monitoring to detect lateral movement using compromised credentials

Monitoring Recommendations

• Enable detailed logging on network devices to capture all SoftAP interface traffic
• Implement SIEM rules to correlate configuration endpoint access with subsequent authentication attempts
• Monitor for reconnaissance activity targeting WyreStorm device fingerprints
• Establish baseline network behavior and alert on anomalous access to device management interfaces

How to Mitigate CVE-2024-25735

Immediate Actions Required

• Update WyreStorm Apollo VX20 firmware to version 1.3.58 or later immediately
• Isolate vulnerable devices on a separate network segment until patching is complete
• Rotate all passwords that may have been exposed through vulnerable devices
• Audit access logs for any indication of prior exploitation
• Review and restrict network access to device management interfaces

Patch Information

WyreStorm has addressed this vulnerability in firmware version 1.3.58. Organizations should prioritize upgrading all affected Apollo VX20 devices to this version or later. After patching, it is critical to change all device passwords as previous credentials may have been compromised.

Workarounds

• Restrict network access to the SoftAP interface using firewall rules or network segmentation
• Disable the SoftAP feature if not operationally required
• Implement network access control (NAC) to limit which devices can communicate with the Apollo VX20
• Deploy a VPN or other secure access method for remote device management
• Monitor all access to the device management interface for unauthorized activity

# Network isolation example using iptables
# Block external access to WyreStorm device management interface
iptables -A INPUT -p tcp --dport 80 -s ! 192.168.1.0/24 -d 192.168.1.100 -j DROP
iptables -A INPUT -p tcp --dport 443 -s ! 192.168.1.0/24 -d 192.168.1.100 -j DROP

# Replace 192.168.1.100 with your WyreStorm device IP
# Replace 192.168.1.0/24 with your trusted management network