CVE-2020-10214 : Exploit Details and Defense Strategies

An issue was discovered on D-Link DIR-825 Rev.B 2.10 devices, leading to a stack-based buffer overflow in the httpd binary, allowing an authenticated user to execute arbitrary code via a POST request.

Understanding CVE-2020-10214

This CVE identifies a critical vulnerability in D-Link DIR-825 Rev.B 2.10 devices.

What is CVE-2020-10214?

CVE-2020-10214 is a stack-based buffer overflow vulnerability in the httpd binary of D-Link DIR-825 Rev.B 2.10 devices, enabling an authenticated user to run arbitrary code through a POST request to ntp_sync.cgi with a long ntp_server parameter.

The Impact of CVE-2020-10214

The exploitation of this vulnerability could result in an attacker executing malicious code on the affected device, potentially leading to unauthorized access, data theft, or further compromise of the device.

Technical Details of CVE-2020-10214

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

A stack-based buffer overflow in the httpd binary of D-Link DIR-825 Rev.B 2.10 devices allows an authenticated user to execute arbitrary code via a POST request to ntp_sync.cgi with an excessively long ntp_server parameter.

Affected Systems and Versions

Affected Systems: D-Link DIR-825 Rev.B 2.10 devices
Affected Versions: Not specified

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user sending a POST request to ntp_sync.cgi with a long ntp_server parameter, triggering the stack-based buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2020-10214 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly to mitigate the vulnerability.
Restrict network access to vulnerable devices.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and firmware on network devices.
Implement strong authentication mechanisms to prevent unauthorized access.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure that the affected D-Link DIR-825 Rev.B 2.10 devices are updated with the latest firmware patches provided by the vendor to address the stack-based buffer overflow vulnerability.