CVE-2018-21142 : Vulnerability Insights and Analysis
Learn about CVE-2018-21142 affecting NETGEAR routers. Discover the impact, affected models, and mitigation steps to secure your devices against this denial of service vulnerability.
Several NETGEAR devices are experiencing a denial of service issue affecting specific models. Learn about the impact, technical details, and mitigation steps.
Understanding CVE-2018-21142
This CVE involves a denial of service vulnerability affecting various NETGEAR router models.
What is CVE-2018-21142?
The vulnerability causes a denial of service on NETGEAR devices, including R6100, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
The Impact of CVE-2018-21142
- CVSS Base Score: 4.5 (Medium)
- Attack Vector: Adjacent Network
- Availability Impact: High
- Privileges Required: High
- No impact on Confidentiality or Integrity
Technical Details of CVE-2018-21142
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The vulnerability allows attackers to trigger a denial of service on the affected NETGEAR devices.
Affected Systems and Versions
- R6100 (versions earlier than 1.0.1.22)
- R7500 (versions earlier than 1.0.0.122)
- R7800 (versions earlier than 1.0.2.42)
- R8900 (versions earlier than 1.0.3.10)
- R9000 (versions earlier than 1.0.3.10)
- WNDR3700v4 (versions earlier than 1.0.2.96)
- WNDR4300 (versions earlier than 1.0.2.98)
- WNDR4300v2 (versions earlier than 1.0.0.54)
- WNDR4500v3 (versions earlier than 1.0.0.54)
- WNR2000v5 (versions earlier than 1.0.0.64)
Exploitation Mechanism
The vulnerability can be exploited by sending specially crafted network packets to the affected devices.
Mitigation and Prevention
Protect your devices from CVE-2018-21142 by following these steps:
Immediate Steps to Take
- Update the firmware of the affected devices to the latest versions provided by NETGEAR.
- Implement network security best practices to minimize the risk of exploitation.
Long-Term Security Practices
- Regularly monitor for firmware updates and apply them promptly.
- Configure firewalls and intrusion detection/prevention systems to filter out malicious traffic.
Patching and Updates
- Stay informed about security advisories from NETGEAR and apply patches as soon as they are released.