CVE-2021-46456 Explained : Impact and Mitigation
Discover the impact of CVE-2021-46456 on D-Link DIR-823-Pro v1.0.2. Learn about the command injection vulnerability's technical details, affected systems, exploitation, and mitigation steps.
D-Link device D-Link DIR-823-Pro v1.0.2 has a command injection vulnerability that allows attackers to execute arbitrary commands.
Understanding CVE-2021-46456
What is CVE-2021-46456?
The vulnerability in the function SetWLanACLSettings of D-Link DIR-823-Pro v1.0.2 permits unauthorized command execution via a specific parameter.
The Impact of CVE-2021-46456
This vulnerability enables threat actors to run arbitrary commands on the affected device, posing a severe security risk.
Technical Details of CVE-2021-46456
Vulnerability Description
A command injection flaw in D-Link DIR-823-Pro v1.0.2's SetWLanACLSettings function allows malicious users to execute commands using a specific parameter.
Affected Systems and Versions
- Product: D-Link DIR-823-Pro v1.0.2
- Vendor: D-Link
- Version: 1.0.2
Exploitation Mechanism
Attackers can exploit the vulnerability through the wl(0).(0)_maclist parameter to inject and execute arbitrary commands.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-supplied patches promptly.
- Implement firewall rules to restrict unauthorized access.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all network devices.
- Conduct security audits and vulnerability assessments periodically.
Patching and Updates
- Refer to security advisories from D-Link for patch availability.