CVE-2019-20686 Explained : Impact and Mitigation
Learn about CVE-2019-20686, a critical vulnerability in certain NETGEAR devices allowing unauthorized access via buffer overflow. Find impacted models and essential mitigation steps.
Certain NETGEAR devices are vulnerable to a buffer overflow attack, potentially allowing unauthorized individuals to compromise security. This CVE affects specific models with firmware versions prior to specified releases.
Understanding CVE-2019-20686
This CVE identifies a critical vulnerability in NETGEAR devices that could be exploited by attackers to execute a buffer overflow attack.
What is CVE-2019-20686?
The vulnerability allows unauthenticated attackers to trigger a buffer overflow on affected NETGEAR devices, leading to potential security breaches.
The Impact of CVE-2019-20686
- CVSS Score: 8.8 (High Severity)
- Attack Vector: Adjacent Network
- Confidentiality, Integrity, and Availability Impact: High
- No Privileges Required for exploitation
Technical Details of CVE-2019-20686
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability in NETGEAR devices enables unauthorized individuals to exploit a buffer overflow, compromising the device's security.
Affected Systems and Versions
The following NETGEAR models are impacted:
- D6200 (firmware version prior to 1.1.00.36)
- D7000 (firmware version prior to 1.0.1.74)
- JR6150 (firmware version prior to 1.0.1.18)
- PR2000 (firmware version prior to 1.0.0.28)
- R6020, R6080, R6050, R6120, R6220, R6260 (firmware versions prior to specified releases)
- R6700v2, R6800, R6900v2 (firmware version prior to 1.2.0.36)
- WNR2020 (firmware version prior to 1.1.0.62)
Exploitation Mechanism
Attackers can exploit this vulnerability through a buffer overflow attack, potentially gaining unauthorized access to the affected devices.
Mitigation and Prevention
Protecting systems from CVE-2019-20686 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update affected devices to the recommended firmware versions to mitigate the vulnerability.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly monitor for security updates and patches from NETGEAR.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
- NETGEAR has released firmware updates addressing the vulnerability. Ensure all affected devices are promptly updated to the latest secure versions.