CVE-2024-1015: Se-elektronic E-ddc3.3 RCE Vulnerability

CVE-2024-1015 Overview

CVE-2024-1015 is a remote command execution vulnerability affecting SE-elektronic GmbH E-DDC3.3 devices running firmware versions 03.07.03 and higher. An attacker can exploit the web configuration functionality of the device to send arbitrary operating system commands, potentially gaining full control over the affected system.

Critical Impact

This vulnerability allows unauthenticated remote attackers to execute arbitrary operating system commands on vulnerable SE-elektronic E-DDC3.3 devices via the web interface, potentially compromising industrial control systems and building automation environments.

Affected Products

• SE-elektronic E-DDC3.3 Firmware version 03.07.03 and higher
• SE-elektronic E-DDC3.3 Hardware devices

Discovery Timeline

• 2024-01-29 - CVE-2024-1015 published to NVD
• 2025-01-03 - Last updated in NVD database

Technical Details for CVE-2024-1015

Vulnerability Analysis

This vulnerability falls under CWE-94 (Improper Control of Generation of Code, also known as Code Injection). The SE-elektronic E-DDC3.3 device's web configuration interface fails to properly sanitize user-supplied input before passing it to system command execution functions. This allows attackers to inject and execute arbitrary commands with the privileges of the web service process.

The vulnerability is particularly concerning because it can be exploited remotely over the network without requiring any authentication or user interaction. Successful exploitation could lead to complete system compromise, including unauthorized access to sensitive configuration data, modification of device settings, and potential pivoting to other systems on the network.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization in the web configuration functionality. User-controlled parameters are passed directly to operating system command execution functions without adequate filtering or escaping of special characters. This allows an attacker to break out of the intended command context and inject additional malicious commands.

Attack Vector

The attack is conducted over the network by sending specially crafted HTTP requests to the device's web configuration interface. The attacker does not need any authentication credentials or prior access to the system to exploit this vulnerability.

An attacker can manipulate parameters in the web interface requests to include command separators (such as semicolons, pipes, or backticks) followed by arbitrary operating system commands. When the vulnerable code processes these inputs, the injected commands are executed on the underlying operating system.

For detailed technical analysis, refer to the HackPlayers CVE Analysis and the INCIBE CERT Security Notice.

Detection Methods for CVE-2024-1015

Indicators of Compromise

• Unusual HTTP requests to the E-DDC3.3 web configuration interface containing shell metacharacters (;, |, &&, backticks, $())
• Unexpected outbound network connections originating from E-DDC3.3 devices
• Anomalous process spawning on the device, particularly shell processes or network utilities
• Unauthorized modifications to device configuration files or settings

Detection Strategies

• Deploy network intrusion detection rules to identify HTTP requests containing command injection patterns targeting E-DDC3.3 devices
• Monitor web server logs on E-DDC3.3 devices for requests with suspicious parameter values containing shell metacharacters
• Implement application-layer firewalls to inspect and block malicious payloads destined for the web configuration interface
• Use behavioral analysis to detect unusual command execution patterns on industrial control devices

Monitoring Recommendations

• Enable comprehensive logging on E-DDC3.3 devices and forward logs to a centralized SIEM for analysis
• Establish baseline network behavior for E-DDC3.3 devices and alert on deviations
• Regularly audit access logs and authentication attempts to the web configuration interface
• Monitor for firmware integrity changes or unauthorized configuration modifications

How to Mitigate CVE-2024-1015

Immediate Actions Required

• Isolate vulnerable SE-elektronic E-DDC3.3 devices from untrusted networks immediately
• Restrict access to the web configuration interface using network segmentation and firewall rules, allowing only trusted management hosts
• Disable the web configuration interface if not operationally required until a patch is available
• Implement strong network access controls and VPN requirements for remote administration

Patch Information

Contact SE-elektronic GmbH directly for information regarding security patches or firmware updates that address this vulnerability. Review the INCIBE CERT Security Notice for additional guidance from the coordinating CERT.

Workarounds

• Place E-DDC3.3 devices behind a reverse proxy that performs input validation and blocks requests containing shell metacharacters
• Implement network-level access control lists (ACLs) to restrict web interface access to specific management IP addresses only
• Use a web application firewall (WAF) configured with rules to detect and block command injection attempts
• Disable unnecessary services and features on the device to reduce the attack surface

# Example firewall rule to restrict access to the web interface (adjust for your environment)
# Allow access only from trusted management network 192.168.10.0/24
iptables -A INPUT -p tcp --dport 80 -s 192.168.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 192.168.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP