CVE-2024-48633 in DIR-878
Summary
by MITRE • 10/17/2024
D-Link DIR_882_FW130B06 and DIR_878 DIR_878_FW130B08 were discovered to contain multiple command injection vulnerabilities via the ExternalPort, InternalPort, ProtocolNumber, and LocalIPAddress parameters in the SetVirtualServerSettings function. This vulnerability allows attackers to execute arbitrary OS commands via a crafted POST request.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/17/2024
The vulnerability identified as CVE-2024-48633 affects D-Link DIR-882 and DIR-878 wireless routers running specific firmware versions, presenting a critical command injection flaw within the router's web interface configuration functionality. This vulnerability resides in the SetVirtualServerSettings function which handles network port mapping configurations, making it a significant concern for network security administrators and cybersecurity professionals. The affected devices are particularly vulnerable because they process user-supplied parameters without adequate input validation or sanitization, creating an attack surface that can be exploited by remote threat actors.
The technical exploitation occurs through the manipulation of four specific parameters: ExternalPort, InternalPort, ProtocolNumber, and LocalIPAddress within the SetVirtualServerSettings function. These parameters are typically used to configure virtual server mappings for port forwarding, but due to insufficient input validation, attackers can inject malicious commands that get executed within the router's operating system context. The vulnerability is particularly dangerous because it allows arbitrary OS command execution via crafted POST requests, meaning that an attacker with network access can potentially gain complete control over the affected router's functionality. This represents a classic command injection vulnerability that aligns with CWE-77 and CWE-88, where user-controllable data is directly incorporated into system commands without proper sanitization.
The operational impact of this vulnerability extends far beyond simple network disruption, as it provides attackers with the ability to execute arbitrary code on the router with the privileges of the web server process. This can lead to complete compromise of the affected device, allowing threat actors to modify network configurations, establish persistent backdoors, intercept network traffic, or use the device as a pivot point for attacking other systems within the local network. The vulnerability affects both the DIR-882 with firmware version 130B06 and DIR-878 with firmware version 130B08, indicating that this is likely a widespread issue affecting multiple D-Link router models within the same product line. The attack vector requires only a network connection to the router's web interface, making it particularly dangerous as it can be exploited from external networks without requiring physical access or authentication credentials.
Security professionals should immediately implement network segmentation measures to prevent unauthorized access to router management interfaces, while also monitoring for suspicious network traffic patterns that might indicate exploitation attempts. The vulnerability's classification under ATT&CK technique T1059.001 (Command and Scripting Interpreter) and T1046 (Network Service Scanning) highlights the need for network monitoring solutions that can detect unusual command execution patterns and unauthorized configuration changes. Device vendors should prioritize the release of firmware updates that include proper input validation and sanitization for all user-controllable parameters within the affected functions. Organizations should also consider implementing network access controls that restrict access to router management interfaces to authorized personnel only, while maintaining detailed logging of all configuration changes to detect potential compromise. The vulnerability demonstrates the critical importance of input validation in embedded systems and web applications, as highlighted in industry standards such as OWASP Top 10 and NIST Cybersecurity Framework guidelines for secure software development practices.