CVE-2018-21188 : Security Advisory and Response
Learn about CVE-2018-21188, a vulnerability allowing authenticated users to trigger a stack-based buffer overflow in certain NETGEAR devices. Find out affected models and mitigation steps.
An authenticated user can exploit a stack-based buffer overflow vulnerability in certain NETGEAR devices. This vulnerability impacts various models including D7800, R7500v2, R7800, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
Understanding CVE-2018-21188
This CVE involves a stack-based buffer overflow vulnerability in specific NETGEAR devices.
What is CVE-2018-21188?
CVE-2018-21188 is a vulnerability that allows an authenticated user to trigger a stack-based buffer overflow in certain NETGEAR devices.
The Impact of CVE-2018-21188
The vulnerability has a CVSS base score of 6.8, indicating a medium severity issue with high impacts on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2018-21188
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability is a stack-based buffer overflow that can be exploited by an authenticated user on specific NETGEAR device models.
Affected Systems and Versions
The following NETGEAR models are impacted by this vulnerability:
- D7800 versions prior to 1.0.1.30
- R7500v2 versions prior to 1.0.3.24
- R7800 versions prior to 1.0.2.40
- R9000 versions prior to 1.0.2.52
- WNDR3700v4 versions prior to 1.0.2.92
- WNDR4300 versions prior to 1.0.2.94
- WNDR4300v2 versions prior to 1.0.0.50
- WNDR4500v3 versions prior to 1.0.0.50
- WNR2000v5 versions prior to 1.0.0.62
Exploitation Mechanism
The vulnerability can be exploited by an authenticated user through a stack-based buffer overflow on the affected NETGEAR devices.
Mitigation and Prevention
Protecting systems from CVE-2018-21188 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by NETGEAR for the affected device models.
- Monitor network traffic for any suspicious activities.
- Restrict access to vulnerable devices to authorized personnel only.
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities.
- Conduct security audits and penetration testing to identify and address potential weaknesses.
- Educate users on best security practices to prevent unauthorized access.
Patching and Updates
Ensure that all affected NETGEAR devices are updated with the latest firmware patches to mitigate the CVE-2018-21188 vulnerability.