CVE-2020-25367 : Vulnerability Insights and Analysis

A command injection vulnerability was discovered in the HNAP1 protocol in D-Link DIR-823G devices with firmware V1.0.2B05. An attacker can execute arbitrary web scripts via shell metacharacters in the Captcha field to Login.

Understanding CVE-2020-25367

This CVE involves a command injection vulnerability in specific D-Link DIR-823G devices, allowing attackers to run arbitrary web scripts.

What is CVE-2020-25367?

CVE-2020-25367 is a security vulnerability found in D-Link DIR-823G devices with firmware V1.0.2B05, enabling attackers to execute unauthorized web scripts by exploiting the Captcha field during login.

The Impact of CVE-2020-25367

The vulnerability poses a significant risk as attackers can inject malicious commands, potentially leading to unauthorized access, data theft, or system compromise.

Technical Details of CVE-2020-25367

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

Vulnerability Description

The vulnerability arises from improper input validation in the HNAP1 protocol, allowing attackers to insert shell metacharacters in the Captcha field, leading to command execution.

Affected Systems and Versions

Device: D-Link DIR-823G
Firmware Version: V1.0.2B05

Exploitation Mechanism

Attackers exploit the vulnerability by inserting shell metacharacters in the Captcha field during the login process, enabling the execution of arbitrary web scripts.

Mitigation and Prevention

Protecting systems from CVE-2020-25367 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable remote access if not required to minimize attack surface
Implement strong, unique passwords for device access
Regularly monitor network traffic for suspicious activities

Long-Term Security Practices

Keep firmware and software up to date with the latest security patches
Conduct regular security audits and penetration testing
Educate users on safe browsing habits and phishing awareness

Patching and Updates

Check the vendor's security bulletin for patches and updates
Apply recommended security fixes promptly to mitigate the vulnerability