CVE-2021-44359 : Exploit Details and Defense Strategies
Learn about CVE-2021-44359, a denial of service vulnerability in the Reolink RLC-410W v3.0.0.136_20121102 JSON parser. Discover impacts, affected systems, exploitation details, 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. An attacker can trigger a reboot via a specially-crafted HTTP request.
Understanding CVE-2021-44359
What is CVE-2021-44359?
The vulnerability exists in the JSON command parser of Reolink RLC-410W v3.0.0.136_20121102, allowing an attacker to exploit it via an HTTP request to cause a denial of service, potentially leading to a system reboot.
The Impact of CVE-2021-44359
The vulnerability has a CVSS base score of 8.6 (High) with a high impact on availability. Attackers can remotely trigger the vulnerability, causing a denial of service.
Technical Details of CVE-2021-44359
Vulnerability Description
- The vulnerability is due to improper input validation in the cgiserver.cgi JSON command parser of Reolink RLC-410W v3.0.0.136_20121102.
Affected Systems and Versions
- Product: Reolink RLC-410W v3.0.0.136_20121102
- Versions: All versions before the fix
Exploitation Mechanism
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Impact: High availability impact
Mitigation and Prevention
Immediate Steps to Take
- Apply the vendor-supplied patch immediately.
- Restrict network access to the affected system.
- Regularly monitor for unauthorized access attempts.
Long-Term Security Practices
- Employ network segmentation to prevent lateral movement of attackers.
- Conduct regular security assessments and audits.
Patching and Updates
- Regularly check for security updates and apply them promptly.