CVE-2018-21175 : What You Need to Know
Learn about CVE-2018-21175, a stack-based buffer overflow vulnerability in certain NETGEAR devices. Find out the impacted models and steps to mitigate the issue.
Some NETGEAR devices are impacted by a stack-based buffer overflow that can be exploited by an authorized user. This vulnerability affects various models including D6100, R6100, R7800, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
Understanding CVE-2018-21175
This CVE identifies a stack-based buffer overflow vulnerability in certain NETGEAR devices that can be exploited by an authenticated user.
What is CVE-2018-21175?
The CVE-2018-21175 vulnerability involves a stack-based buffer overflow in specific NETGEAR models, potentially allowing an authorized user to execute arbitrary code.
The Impact of CVE-2018-21175
The vulnerability has a CVSS v3.0 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-2018-21175
This section provides more technical insights into the CVE-2018-21175 vulnerability.
Vulnerability Description
The stack-based buffer overflow in NETGEAR devices allows an authenticated user to trigger the vulnerability, potentially leading to arbitrary code execution.
Affected Systems and Versions
The following NETGEAR models are impacted by this vulnerability:
- D6100 (version before 1.0.0.57)
- R6100 (version before 1.0.1.20)
- R7800 (version before 1.0.2.40)
- R9000 (version before 1.0.2.52)
- 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, potentially leading to unauthorized code execution.
Mitigation and Prevention
To address CVE-2018-21175, users and administrators should take the following steps:
Immediate Steps to Take
- Update the firmware of the affected NETGEAR devices to the latest versions.
- Implement strong password policies and restrict access to vulnerable devices.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from NETGEAR.
- Conduct security assessments and penetration testing to identify vulnerabilities.
Patching and Updates
- Apply patches and firmware updates provided by NETGEAR to mitigate the CVE-2018-21175 vulnerability.