CVE-2018-21198 : Security Advisory and Response
Learn about CVE-2018-21198, a stack-based buffer overflow vulnerability in certain NETGEAR devices affecting specific models with firmware versions prior to certain releases. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A stack-based buffer overflow vulnerability in certain NETGEAR devices allows authenticated users to exploit the system. This CVE affects specific models with firmware versions prior to certain releases.
Understanding CVE-2018-21198
This CVE involves a security issue in NETGEAR devices that can be exploited by authenticated users.
What is CVE-2018-21198?
The vulnerability is a stack-based buffer overflow in NETGEAR devices, impacting various models with specific firmware versions.
The Impact of CVE-2018-21198
The vulnerability has a CVSS base score of 6.8, with high impacts on confidentiality, integrity, and availability. It requires high privileges for exploitation.
Technical Details of CVE-2018-21198
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability is a stack-based buffer overflow in certain NETGEAR devices, allowing authenticated users to exploit the system.
Affected Systems and Versions
The following NETGEAR models are affected:
- D6100 (firmware version prior to 1.0.0.57)
- R7800 (firmware version prior to 1.2.0.44)
- R9000 (firmware version prior to 1.0.2.52)
- WNDR3700v4 (firmware version prior to 1.0.2.92)
- WNDR4300 (firmware version prior to 1.0.2.94)
- WNDR4300v2 (firmware version prior to 1.0.0.54)
- WNDR4500v3 (firmware version prior to 1.0.0.54)
- WNR2000v5 (firmware version prior to 1.0.0.62)
Exploitation Mechanism
The vulnerability can be exploited by authenticated users, leading to a stack-based buffer overflow in the affected NETGEAR devices.
Mitigation and Prevention
Protecting systems from CVE-2018-21198 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update affected devices to the recommended firmware versions to mitigate the vulnerability.
- Monitor for any unusual activities on the network that could indicate exploitation.
Long-Term Security Practices
- Regularly update firmware and security patches on all network devices.
- Implement strong authentication mechanisms to prevent unauthorized access.
Patching and Updates
Regularly check for firmware updates and security patches from NETGEAR to address vulnerabilities like CVE-2018-21198.