CVE-2021-44381 Explained : Impact and Mitigation
Learn about CVE-2021-44381, a high-severity denial of service vulnerability in the JSON command parser of reolink RLC-410W v3.0.0.136_20121102. Find out the impact, affected systems, exploitation, and mitigation steps.
A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102, allowing an attacker to trigger a reboot through a crafted HTTP request.
Understanding CVE-2021-44381
What is CVE-2021-44381?
This CVE entails a denial of service vulnerability in the JSON command parser of reolink RLC-410W v3.0.0.136_20121102, potentially leading to a system reboot upon exploitation.
The Impact of CVE-2021-44381
The vulnerability carries a high severity level with a CVSS base score of 8.6. An attacker can exploit this issue via a specially-crafted HTTP request, causing a denial of service.
Technical Details of CVE-2021-44381
Vulnerability Description
The vulnerability originates in the cgiserver.cgi JSON command parser of the affected device. Not treating SetPowerLed param as an object allows attackers to trigger the reboot.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Version: RLC-410W v3.0.0.136_20121102
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Impact: High
- CVSS Score: 8.6
Mitigation and Prevention
Immediate Steps to Take
- Monitor network traffic for any suspicious activity targeting cgiserver.cgi.
- Implement firewall rules to restrict access to critical services.
Long-Term Security Practices
- Regularly update the firmware and software of the affected device.
- Conduct security assessments and penetration testing to identify and patch vulnerabilities early.
Patching and Updates
Regularly check for firmware updates from the vendor to address and mitigate the vulnerability.