CVE-2018-21192 : Vulnerability Insights and Analysis
Learn about CVE-2018-21192, a stack-based buffer overflow vulnerability in certain NETGEAR devices. Find out the impacted systems, exploitation risks, and mitigation steps.
An authenticated user can potentially exploit a stack-based buffer overflow vulnerability in certain NETGEAR devices.
Understanding CVE-2018-21192
What is CVE-2018-21192?
Certain NETGEAR devices are affected by a stack-based buffer overflow vulnerability that can be exploited by an authenticated user. The impacted devices include D6100, R6100, R7800, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
The Impact of CVE-2018-21192
This vulnerability has a CVSS base score of 6.8, indicating a medium severity level. It can lead to high impacts on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2018-21192
Vulnerability Description
The vulnerability is a stack-based buffer overflow that allows an authenticated user to execute arbitrary code on the affected NETGEAR devices.
Affected Systems and Versions
- D6100 (version before 1.0.0.57)
- R6100 (version before 1.0.1.20)
- R7800 (version before 1.0.2.40)
- R9000 (version before 1.0.3.6)
- WNDR3700v4 (version before 1.0.2.92)
- WNDR4300 (version before 1.0.2.94)
- WNDR4300v2 (version before 1.0.0.50)
- WNDR4500v3 (version before 1.0.0.50)
- WNR2000v5 (version before 1.0.0.62)
Exploitation Mechanism
The vulnerability can be exploited by an authenticated user through a stack-based buffer overflow attack, potentially leading to the execution of malicious code on the affected devices.
Mitigation and Prevention
Immediate Steps to Take
- Update the firmware of the affected devices to the latest versions provided by NETGEAR.
- Monitor network traffic for any suspicious activities that may indicate exploitation attempts.
Long-Term Security Practices
- Regularly update and patch all network devices to mitigate potential vulnerabilities.
- Implement strong authentication mechanisms to prevent unauthorized access to network devices.
Patching and Updates
Apply security patches and updates released by NETGEAR to address the stack-based buffer overflow vulnerability in the affected devices.