CVE-2024-9004 in DAR-7000
Summary
by MITRE • 09/20/2024
A vulnerability classified as critical has been found in D-Link DAR-7000 up to 20240912. Affected is an unknown function of the file /view/DBManage/Backup_Server_commit.php. The manipulation of the argument host leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
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Analysis
by VulDB Data Team • 09/24/2024
This critical vulnerability in D-Link DAR-7000 routers represents a severe operating system command injection flaw that can be exploited remotely through the web interface. The vulnerability exists within the Backup_Server_commit.php file which processes the host parameter, allowing attackers to inject arbitrary operating system commands. This type of vulnerability falls under CWE-77 which specifically addresses command injection flaws in software systems. The attack vector is particularly dangerous as it enables remote code execution without requiring authentication, making it highly attractive to threat actors. The vulnerability affects all versions of the D-Link DAR-7000 router up to the 20240912 release, indicating a long-standing flaw that has remained unpatched.
The technical implementation of this vulnerability involves improper input validation within the PHP script that handles database management operations. When the host parameter is processed in the Backup_Server_commit.php file, the application fails to properly sanitize or escape user-supplied input before incorporating it into system commands. This creates a direct pathway for attackers to execute malicious commands on the underlying operating system. The vulnerability's classification as remote exploitation means that an attacker can trigger the command injection from outside the network perimeter, potentially allowing for full system compromise including data exfiltration, persistence mechanisms, and further network reconnaissance.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete system compromise and potential lateral movement within affected networks. Attackers could leverage this vulnerability to establish persistent backdoors, install malware, or use the compromised device as a pivot point for attacking other networked systems. This aligns with ATT&CK technique T1059 which covers command and scripting interpreter, specifically targeting operating system command execution capabilities. Organizations using unsupported D-Link DAR-7000 devices face significant risk as these devices no longer receive security updates, leaving them vulnerable to exploitation by threat actors who may have already developed and publicly disclosed working exploits.
Mitigation strategies for this vulnerability are limited due to the device's end-of-life status, but organizations should immediately isolate affected devices from critical network segments and implement network segmentation to prevent lateral movement. Network administrators should deploy intrusion detection systems to monitor for suspicious command execution patterns and consider implementing web application firewalls to filter malicious requests targeting the vulnerable PHP endpoint. The most effective long-term solution involves replacing affected D-Link DAR-7000 devices with supported models that receive regular security updates and patches. Additionally, organizations should conduct comprehensive network assessments to identify any other unsupported devices that may be vulnerable to similar command injection flaws, as this represents a common pattern in legacy networking equipment. The public disclosure of this exploit means that threat actors are actively targeting vulnerable systems, making immediate remediation critical for maintaining network security posture.