CVE-2025-57105

Comprehensive Technical Analysis of CVE-2025-57105

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-57105 CVSS Score: 9.8

The DI-7400G+ router has a command injection vulnerability, which allows attackers to execute arbitrary commands on the device. This vulnerability is critical, as indicated by its high CVSS score of 9.8. Command injection vulnerabilities are particularly dangerous because they can lead to full system compromise, allowing attackers to take control of the device, exfiltrate data, or use the device as a pivot point for further attacks within the network.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: Attackers can exploit this vulnerability remotely by sending crafted HTTP requests to the affected router.
• Internal Network Exploitation: An attacker with access to the internal network can exploit this vulnerability to gain control over the router.

Exploitation Methods:

• Command Injection: By injecting malicious commands through the vulnerable parameters (ac_mng_srv_host), attackers can execute arbitrary commands on the router.
• Script Injection: Attackers can inject scripts to automate the execution of commands, potentially leading to persistent access.

3. Affected Systems and Software Versions

Affected Systems:

• DI-7400G+ routers

Software Versions:

• The specific firmware versions affected are not detailed in the CVE description. However, it is implied that the vulnerability exists in the jhttpd program, specifically in the mng_platform.asp and wayos_ac_server.asp files.

4. Recommended Mitigation Strategies

Immediate Actions:

• Patch Management: Apply the latest firmware updates provided by the vendor as soon as they are available.
• Network Segmentation: Isolate the affected routers from critical network segments to limit potential damage.
• Access Control: Implement strict access controls to limit who can access the router's management interface.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments of network devices.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activity.
• User Education: Educate users on the importance of not exposing the router's management interface to the internet.

5. Impact on Cybersecurity Landscape

The discovery of this vulnerability underscores the ongoing challenge of securing IoT devices, particularly routers, which are often the first line of defense in home and small business networks. The high CVSS score indicates the potential for significant impact, including data breaches, network compromise, and further lateral movement within affected networks. This vulnerability highlights the need for robust security practices in IoT device management and the importance of timely patching and updates.

6. Technical Details for Security Professionals

Vulnerable Functions:

• sub_478D28 in mng_platform.asp
• sub_4A12DC in wayos_ac_server.asp

Parameter:

• ac_mng_srv_host

Exploitation Steps:

1. Identify the Target: Use network scanning tools to identify DI-7400G+ routers on the network.
2. Craft the Payload: Create a malicious HTTP request that includes the command injection payload in the ac_mng_srv_host parameter.
3. Send the Request: Use a tool like curl or a custom script to send the crafted request to the router.
4. Execute Commands: The injected commands will be executed on the router, allowing the attacker to gain control.

Detection:

• Log Analysis: Monitor router logs for unusual command execution or unexpected HTTP requests.
• Behavioral Analysis: Use behavioral analysis tools to detect anomalous activity that may indicate command injection attempts.

References:

• DI-7400G+ Product Information
• IoT PoC on GitHub
• D-Link Tech Support
• D-Link Security Bulletin

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of exploitation and protect their networks from potential attacks.