CVE-2024-48632 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 LocalIPAddress, TCPPorts, and UDPPorts parameters in the SetPortForwardingSettings function. This vulnerability allows attackers to execute arbitrary OS commands via a crafted POST request.
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Analysis
by VulDB Data Team • 10/17/2024
The vulnerability identified as CVE-2024-48632 affects D-Link DIR-882 and DIR-878 wireless routers running specific firmware versions, presenting a critical command injection flaw that compromises the device's security integrity. This vulnerability resides within the SetPortForwardingSettings function of the router's web interface, where insufficient input validation permits malicious actors to inject arbitrary operating system commands through carefully crafted POST requests. The affected parameters include LocalIPAddress, TCPPorts, and UDPPorts, which are commonly used for configuring port forwarding rules on network devices. The flaw represents a classic command injection vulnerability that allows remote code execution on the affected devices, potentially enabling attackers to gain complete control over the router's operations and underlying system.
The technical exploitation of this vulnerability occurs through the manipulation of input parameters within the web application's processing logic. When the router receives a POST request containing malicious input in the specified parameters, the system fails to properly sanitize or validate the data before incorporating it into system commands. This lack of proper input validation creates an environment where attackers can inject OS commands that get executed with the privileges of the web application process, typically running with administrative privileges on the device. The vulnerability is particularly concerning because it operates at the application layer and can be exploited remotely without requiring authentication, making it accessible to attackers on the network or even from external sources if the device is exposed to the internet. This type of vulnerability is categorized under CWE-77 and is directly aligned with the ATT&CK technique T1059.001 for command and scripting interpreter, specifically focusing on the execution of system commands through web interfaces.
The operational impact of CVE-2024-48632 extends far beyond simple unauthorized access, as it provides attackers with complete control over the affected routers. Once exploited, attackers can manipulate network traffic routing, redirect connections to malicious servers, disable security features, and potentially use the compromised device as a pivot point for attacking other systems within the local network. The vulnerability could enable attackers to establish persistent backdoors, modify firewall rules, and gain access to sensitive network information. Additionally, the compromised router can be used for launching attacks against other devices on the network or serving as a command and control center for botnet activities. The implications are particularly severe for enterprise environments where these routers might be deployed in critical network infrastructure, potentially compromising the entire network security posture.
Mitigation strategies for CVE-2024-48632 should focus on immediate firmware updates from D-Link, as the vendor has likely released patches addressing the command injection vulnerabilities. Network administrators should implement network segmentation to limit access to these devices and ensure that they are not directly exposed to the internet. Access controls should be strengthened by changing default credentials and implementing multi-factor authentication where possible. Network monitoring should be enhanced to detect unusual traffic patterns that might indicate exploitation attempts. The affected devices should be isolated from critical network segments until proper security updates are applied. Security teams should also consider implementing intrusion detection systems that can identify suspicious POST requests containing command injection patterns. Regular vulnerability assessments should be conducted to identify similar issues in other network devices and ensure that input validation mechanisms are properly implemented across all systems. Organizations should maintain up-to-date inventories of all network devices and their firmware versions to quickly identify and remediate similar vulnerabilities in the future.