CVE-2024-51151 in DI-8200
Summary
by MITRE • 11/21/2024
D-Link DI-8200 16.07.26A1 is vulnerable to remote command execution in the msp_info_htm function via the flag parameter and cmd parameter.
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Analysis
by VulDB Data Team • 11/21/2024
The D-Link DI-8200 router model running firmware version 16.07.26A1 presents a critical remote command execution vulnerability that allows attackers to execute arbitrary commands on the affected device. This vulnerability specifically manifests within the msp_info_htm function where the flag and cmd parameters are processed without adequate input validation or sanitization. The flaw enables remote attackers to inject malicious commands through these parameters, potentially compromising the entire network infrastructure. The vulnerability affects the router's web-based management interface, making it accessible over the network without requiring physical access or authentication. This represents a severe security risk as it allows attackers to gain full administrative control over the device, potentially leading to complete network compromise.
The technical implementation of this vulnerability stems from improper input handling within the router's web application layer. When the msp_info_htm function processes the flag and cmd parameters, it fails to properly validate or sanitize user-supplied input before incorporating it into system commands. This classic input validation flaw falls under the CWE-77 category, specifically CWE-77: Improper Neutralization of Special Elements used in a Command. The vulnerability is further aligned with CWE-94 which covers "Improper Control of Generation of Code ('Code Injection')" and CWE-119 which addresses "Improper Restriction of Operations within the Bounds of a Memory Buffer." Attackers can exploit this by crafting malicious HTTP requests containing specially formatted flag and cmd parameters that, when processed by the vulnerable function, result in arbitrary command execution on the underlying operating system.
The operational impact of this vulnerability is substantial as it provides attackers with complete control over the affected router. Once exploited, attackers can modify router configurations, redirect network traffic, install malicious software, or use the device as a pivot point for further attacks within the network. The vulnerability enables persistent access to the network infrastructure, potentially allowing for long-term surveillance, data exfiltration, or disruption of network services. Network administrators may remain unaware of the compromise, as the malicious activities could be conducted without leaving obvious traces in the router's logs. The attack surface is particularly concerning as routers often serve as the gateway between internal networks and external internet access, making them prime targets for attackers seeking to establish footholds within larger network environments.
Mitigation strategies for this vulnerability should include immediate firmware updates from D-Link to address the command injection flaw in the msp_info_htm function. Organizations should also implement network segmentation and access controls to limit the impact of potential exploitation. Network monitoring should be enhanced to detect unusual traffic patterns that might indicate exploitation attempts, particularly around the affected web interface ports. Security professionals should consider disabling unnecessary web management interfaces and implementing strict firewall rules to restrict access to router management functions. The vulnerability also highlights the importance of secure coding practices and input validation, which aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter and T1566.001 for Phishing for Information. Organizations should conduct regular security assessments of network infrastructure devices and maintain up-to-date vulnerability management processes to identify and remediate similar flaws in other network equipment.