CVE-2021-40411 Explained : Impact and Mitigation
Discover the details of CVE-2021-40411, an OS command injection vulnerability in Reolink RLC-410W v3.0.0.136_20121102. Learn about the impact, affected systems, exploitation mechanism, and mitigation steps.
This CVE-2021-40411 article provides details about an OS command injection vulnerability affecting Reolink RLC-410W v3.0.0.136_20121102.
Understanding CVE-2021-40411
This section explains the impact, technical details, and mitigation steps for CVE-2021-40411.
What is CVE-2021-40411?
An OS command injection vulnerability exists in the device network settings functionality of Reolink RLC-410W v3.0.0.136_20121102, leading to potential OS command injection.
The Impact of CVE-2021-40411
The vulnerability has a CVSS v3.0 base score of 9.1 (Critical) with high impact on confidentiality, integrity, and availability. Attackers can exploit this remotely with low complexity.
Technical Details of CVE-2021-40411
Explore the specifics of the vulnerability.
Vulnerability Description
The issue arises from improper handling of the dns2 parameter in the SetLocalLink API, allowing malicious OS commands to be injected.
Affected Systems and Versions
- Product: Reolink RLC-410W v3.0.0.136_20121102
- Version: All versions are affected
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: High
- User Interaction: None
- Scope: Changed
Mitigation and Prevention
Learn how to address and prevent the vulnerability.
Immediate Steps to Take
- Disable external access to the affected device
- Implement network segmentation
- Apply firewall rules to restrict access
Long-Term Security Practices
- Regularly update firmware and software
- Conduct security assessments and penetration testing
- Educate users on secure configuration practices
- Monitor network traffic for anomalies
Patching and Updates
- Check for patches and security updates from the vendor
- Apply recommended security patches promptly