CVE-2018-21153 : Security Advisory and Response
Learn about CVE-2018-21153, a high-severity vulnerability in certain NETGEAR devices allowing unauthorized attackers to exploit buffer overflow. Find out affected systems, impacts, and mitigation steps.
An unauthorized attacker can exploit a buffer overflow vulnerability in certain NETGEAR devices. This vulnerability affects various models and firmware versions.
Understanding CVE-2018-21153
What is CVE-2018-21153?
CVE-2018-21153 is a buffer overflow vulnerability that allows unauthorized attackers to exploit certain NETGEAR devices.
The Impact of CVE-2018-21153
The vulnerability has a CVSS base score of 8.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2018-21153
Vulnerability Description
- An unauthorized attacker can exploit a buffer overflow vulnerability in specific NETGEAR devices.
Affected Systems and Versions
- Models affected include D7800, DM200, EX2700, EX6100v2, EX6150v2, EX6200v2, EX6400, EX7300, EX8000, R6100, R7500, R7500v2, R7800, R8900, R9000, WN2000RPTv3, WN3000RPv2, WN3000RPv3, WN3100RPv2, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
- Firmware versions before specific releases are vulnerable.
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by NETGEAR for the affected devices.
- Disable remote management if not required.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update firmware and software to the latest versions.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Regularly check for security updates and apply them promptly to ensure protection against known vulnerabilities.