CVE-2021-42783 : Security Advisory and Response
Learn about the Missing Authentication for Critical Function vulnerability in D-Link DWR-932C E1 firmware (version 1.0.0.4) that allows unauthenticated attackers to execute administrative actions. Find mitigation steps and best practices to secure your system.
A vulnerability in D-Link DWR-932C E1 firmware allows unauthenticated attackers to execute administrative actions.
Understanding CVE-2021-42783
This CVE involves a Missing Authentication for Critical Function vulnerability in the debug_post_set.cgi of D-Link DWR-932C E1 firmware.
What is CVE-2021-42783?
The vulnerability enables attackers to execute administrative actions without authentication.
The Impact of CVE-2021-42783
The vulnerability allows unauthenticated attackers to misuse administrative functionalities on affected systems.
Technical Details of CVE-2021-42783
This section covers the technical aspects of the vulnerability.
Vulnerability Description
- The issue lies in the debug_post_set.cgi of D-Link DWR-932C E1 firmware.
Affected Systems and Versions
- Product: DWR-932C E1
- Vendor: D-Link
- Vulnerable Version: 1.0.0.4
Exploitation Mechanism
- Attackers can exploit this vulnerability remotely without the need for authentication.
Mitigation and Prevention
Protect your systems from CVE-2021-42783 with the following measures.
Immediate Steps to Take
- Update firmware to a patched version immediately.
- Implement network controls to restrict access to the affected service.
- Regularly monitor for any unauthorized access attempts.
Long-Term Security Practices
- Conduct security assessments and audits regularly.
- Educate users on safe browsing practices and potential risks.
Patching and Updates
- Stay informed about security updates from D-Link and apply patches promptly.