CVE-2021-44399 : Exploit Details and Defense Strategies
Learn about CVE-2021-44399, a high-severity denial of service vulnerability in Reolink RLC-410W v3.0.0.136_20121102, allowing a specially-crafted HTTP request to trigger a system reboot. Find mitigation steps and patches.
A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of Reolink RLC-410W v3.0.0.136_20121102, allowing a specially-crafted HTTP request to cause a reboot.
Understanding CVE-2021-44399
What is CVE-2021-44399?
This CVE identifies a denial of service vulnerability in Reolink RLC-410W v3.0.0.136_20121102, triggered by a specially-crafted HTTP request in the cgiserver.cgi JSON command parser.
The Impact of CVE-2021-44399
The vulnerability carries a CVSS base score of 8.6 (High severity) and can result in a denial of service attack, leading to a system reboot.
Technical Details of CVE-2021-44399
Vulnerability Description
A specially-crafted HTTP request can exploit the cgiserver.cgi JSON command parser in Reolink RLC-410W v3.0.0.136_20121102, causing a denial of service condition.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Reolink RLC-410W v3.0.0.136_20121102
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Impact on Availability: High
- CWE-20: Improper Input Validation is the identified weakness.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Restrict network access to affected devices.
Long-Term Security Practices
- Regularly update and patch software to address vulnerabilities.
- Implement network segmentation and firewall rules to limit exposure.
Patching and Updates
Apply the latest patches provided by Reolink to mitigate the vulnerability.