CVE-2018-21149 : Exploit Details and Defense Strategies
Learn about CVE-2018-21149, a critical stack-based buffer overflow vulnerability in NETGEAR devices. Find out the impacted models and steps to mitigate the risk.
NETGEAR devices are vulnerable to a stack-based buffer overflow, allowing authenticated users to exploit the system. This CVE affects various models including D7800, DM200, R6100, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
Understanding CVE-2018-21149
This CVE involves a critical vulnerability in NETGEAR devices that can be exploited by authenticated users.
What is CVE-2018-21149?
CVE-2018-21149 is a stack-based buffer overflow vulnerability found in certain NETGEAR devices, enabling authenticated users to execute malicious code.
The Impact of CVE-2018-21149
The vulnerability has a CVSS base score of 6.8 (Medium severity) with high impacts on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2018-21149
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability allows authenticated users to trigger a stack-based buffer overflow on affected NETGEAR devices.
Affected Systems and Versions
- D7800 (before version 1.0.1.34)
- DM200 (before version 1.0.0.50)
- R6100 (before version 1.0.1.22)
- R7500 (before version 1.0.0.122)
- R7800 (before version 1.0.2.42)
- R8900 (before version 1.0.3.10)
- R9000 (before version 1.0.3.10)
- WNDR3700v4 (before version 1.0.2.96)
- WNDR4300 (before version 1.0.0.54)
- WNDR4300v2 (before version 1.0.0.54)
- WNDR4500v3 (before version 1.0.0.54)
- WNR2000v5 (before version 1.0.0.64)
Exploitation Mechanism
The vulnerability can be exploited by authenticated users to execute arbitrary code on the affected devices.
Mitigation and Prevention
Protecting systems from CVE-2018-21149 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply security patches provided by NETGEAR for the affected devices.
- Monitor network traffic for any suspicious activities.
- Restrict access to vulnerable devices.
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities.
- Implement strong authentication mechanisms to prevent unauthorized access.
- Conduct regular security audits and penetration testing.
Patching and Updates
Ensure that all affected NETGEAR devices are updated with the latest firmware and security patches to mitigate the CVE-2018-21149 vulnerability.