CVE-2025-0675: Elber Products Information Disclosure Flaw

CVE-2025-0675 Overview

Multiple Elber products are affected by a critical vulnerability that allows unauthenticated device configuration access and client-side hidden functionality disclosure. This vulnerability (CWE-912: Hidden Functionality) enables remote attackers to access sensitive device configurations without requiring any authentication, potentially exposing critical broadcast infrastructure to unauthorized manipulation.

Critical Impact

Unauthenticated attackers can remotely access device configurations and discover hidden functionality in multiple Elber broadcast equipment products, potentially compromising critical broadcast infrastructure.

Affected Products

• Multiple Elber broadcast equipment products
• Devices with exposed web interfaces
• Industrial Control Systems (ICS) equipment as referenced in CISA advisory

Discovery Timeline

• 2025-02-07 - CVE CVE-2025-0675 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-0675

Vulnerability Analysis

This vulnerability stems from the presence of hidden functionality (CWE-912) within multiple Elber products. The affected devices expose configuration interfaces that do not implement proper authentication mechanisms, allowing any network-accessible attacker to view and potentially modify device settings. Additionally, client-side code reveals hidden functionality that was not intended to be accessible to end users.

The network-accessible nature of this vulnerability means that any attacker who can reach the device's web interface can exploit these weaknesses without needing valid credentials. This is particularly concerning for Industrial Control Systems (ICS) environments where Elber broadcast equipment may be deployed, as these systems often support critical broadcast infrastructure operations.

Root Cause

The root cause of this vulnerability is twofold:

1. Missing Authentication Controls: The affected Elber products fail to implement proper authentication mechanisms on device configuration endpoints, allowing unauthenticated access to sensitive settings.

2. Hidden Functionality Exposure (CWE-912): Client-side code contains hidden functionality that was likely intended for debugging or administrative purposes but was not properly removed or secured before deployment. This hidden functionality can be discovered and potentially abused by attackers examining the client-side application code.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no user interaction or prior authentication. An attacker can exploit this vulnerability by:

1. Identifying Elber devices exposed on the network, either on internal networks or inadvertently exposed to the internet
2. Accessing the device's web interface directly without credentials
3. Examining client-side code to discover hidden functionality
4. Accessing configuration endpoints to read or modify device settings
5. Leveraging discovered hidden features for further device manipulation

The exploitation mechanism does not require sophisticated tools or techniques—standard web browsers and network reconnaissance tools are sufficient to discover and exploit these weaknesses. For detailed technical information, refer to the CISA ICS Advisory ICSA-25-035-03.

Detection Methods for CVE-2025-0675

Indicators of Compromise

• Unexpected configuration changes on Elber broadcast equipment
• Unauthenticated HTTP/HTTPS requests to device configuration endpoints
• Access attempts from unauthorized IP addresses to Elber device management interfaces
• Evidence of client-side code enumeration or automated scanning activity

Detection Strategies

• Monitor network traffic for unauthenticated access attempts to Elber device web interfaces
• Implement intrusion detection rules to alert on configuration page access without proper authentication headers
• Review web server logs on Elber devices for suspicious access patterns
• Deploy network segmentation monitoring to detect unauthorized cross-segment access to ICS devices

Monitoring Recommendations

• Enable logging on all Elber device management interfaces and forward logs to a centralized SIEM
• Implement network traffic analysis to detect reconnaissance activity targeting broadcast equipment
• Set up alerts for any configuration changes on critical Elber devices
• Monitor for unusual client-side requests that may indicate hidden functionality discovery attempts

How to Mitigate CVE-2025-0675

Immediate Actions Required

• Immediately isolate affected Elber devices from direct internet access
• Implement network segmentation to restrict access to authorized management networks only
• Deploy firewall rules to limit access to Elber device web interfaces to trusted IP addresses
• Review and audit current device configurations for any unauthorized changes

Patch Information

Organizations should consult the CISA ICS Advisory ICSA-25-035-03 for specific patch information and vendor guidance. Contact Elber directly for firmware updates that address this vulnerability. Apply any available security patches as soon as they become available after testing in a non-production environment.

Workarounds

• Place all affected Elber devices behind a VPN or secure gateway requiring authentication
• Implement strict firewall rules to allow only authorized IP addresses to access device management interfaces
• Use application-layer firewalls or reverse proxies to add authentication in front of affected devices
• Disable or restrict access to any non-essential device features until patches are available
• Conduct regular security audits of device configurations to detect unauthorized changes

# Example firewall rule to restrict access to Elber device management interface
# Allow only trusted management network (adjust IP ranges as needed)
iptables -A INPUT -p tcp --dport 80 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP