CVE-2018-21197 : Vulnerability Insights and Analysis
Learn about CVE-2018-21197 affecting certain NETGEAR devices. Find out the impact, affected systems, and mitigation steps for this stack-based buffer overflow vulnerability.
Certain NETGEAR devices are susceptible to a stack-based buffer overflow vulnerability when accessed by an authenticated user. This CVE affects specific models such as D7800, R6100, R7500, R7500v2, R7800, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
Understanding CVE-2018-21197
This CVE involves a stack-based buffer overflow vulnerability in certain NETGEAR devices, potentially allowing an authenticated user to execute arbitrary code.
What is CVE-2018-21197?
The vulnerability exists in firmware versions prior to 1.0.1.34, 1.0.1.22, 1.0.0.122, 1.0.3.26, 1.0.2.40, 1.0.2.52, 1.0.2.92, 1.0.2.94, 1.0.0.50, 1.0.0.50, and 1.0.0.62 for the affected NETGEAR devices.
The Impact of CVE-2018-21197
- CVSS Score: 6.8 (Medium Severity)
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Availability Impact: High
- Confidentiality Impact: High
- Integrity Impact: High
- Privileges Required: High
- User Interaction: None
Technical Details of CVE-2018-21197
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability is a stack-based buffer overflow that could allow an authenticated user to trigger arbitrary code execution on the affected NETGEAR devices.
Affected Systems and Versions
The following NETGEAR models are impacted:
- D7800
- R6100
- R7500
- R7500v2
- R7800
- R9000
- WNDR3700v4
- WNDR4300
- WNDR4300v2
- WNDR4500v3
- WNR2000v5
Exploitation Mechanism
The vulnerability can be exploited by an authenticated user to execute malicious code on the affected devices.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2018-21197.
Immediate Steps to Take
- Update the firmware of the affected NETGEAR devices to versions that address the vulnerability.
- Implement strong authentication mechanisms to prevent unauthorized access.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from NETGEAR.
- Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
- Apply patches and updates provided by NETGEAR promptly to ensure the security of the devices.