CVE-2020-15632 : Vulnerability Insights and Analysis

A vulnerability in D-Link DIR-842 3.13B05 routers allows network-adjacent attackers to bypass authentication, potentially leading to arbitrary code execution.

Understanding CVE-2020-15632

This CVE involves a flaw in the processing of HNAP GetCAPTCHAsetting requests on affected D-Link routers.

What is CVE-2020-15632?

The vulnerability enables attackers to bypass authentication on D-Link DIR-842 3.13B05 routers without requiring user interaction, allowing them to execute arbitrary code on the device.

The Impact of CVE-2020-15632

CVSS Base Score: 8.8 (High Severity)
Attack Vector: Adjacent Network
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: None

Technical Details of CVE-2020-15632

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

Vulnerability Description

The flaw arises from improper session handling in the processing of HNAP GetCAPTCHAsetting requests, enabling unauthorized access.

Affected Systems and Versions

Affected Product: D-Link DIR-842
Affected Version: 3.13B05

Exploitation Mechanism

Attackers exploit the vulnerability by sending crafted requests to the router, leveraging the lack of proper session management to execute malicious code.

Mitigation and Prevention

Protecting systems from CVE-2020-15632 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by D-Link promptly.
Monitor network traffic for any suspicious activities.
Restrict access to vulnerable devices.

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Check D-Link's official advisories for patch availability.
Ensure all routers are updated with the latest firmware to mitigate the vulnerability.