CVE-2019-20762 : Vulnerability Insights and Analysis

Certain models of NETGEAR devices are susceptible to a buffer overflow issue when accessed by an authorized user. The specific affected models include D8500, R8500, R8300, R8000, R7300DST, R7100LG, R6900P, R7900P, R8000P, R7000P, R7000, R6900, R6700, and R6400.

Understanding CVE-2019-20762

This CVE identifies a buffer overflow vulnerability in certain NETGEAR devices that can be exploited by an authenticated user.

What is CVE-2019-20762?

The CVE-2019-20762 vulnerability involves a buffer overflow issue in specific NETGEAR router models when accessed by an authorized user.

The Impact of CVE-2019-20762

The vulnerability has a CVSS 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-2019-20762

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability allows an authenticated user to trigger a buffer overflow on certain NETGEAR router models, potentially leading to unauthorized access or denial of service.

Affected Systems and Versions

D8500 (versions prior to 1.0.3.43)
R8500 (versions prior to 1.0.2.128)
R8300 (versions prior to 1.0.2.128)
R8000 (versions prior to 1.0.4.28)
R7300DST (versions prior to 1.0.0.68)
R7100LG (versions prior to 1.0.0.48)
R6900P (versions prior to 1.3.1.44)
R7900P (versions prior to 1.4.1.30)
R8000P (versions prior to 1.4.1.30)
R7000P (versions prior to 1.3.1.44)
R7000 (versions prior to 1.0.9.34)
R6900 (versions prior to 1.0.2.4)
R6700 (versions prior to 1.0.2.6)
R6400 (versions prior to 1.0.1.44)

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user to execute arbitrary code or disrupt the normal operation of the affected NETGEAR devices.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-20762.

Immediate Steps to Take

Update the firmware of the affected NETGEAR devices to the latest patched versions.
Implement strong and unique passwords for device access.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly check for firmware updates and apply them promptly.
Conduct security assessments and penetration testing on network devices.

Patching and Updates

NETGEAR has released patches for the affected models. Ensure all devices are updated to the latest firmware versions to mitigate the vulnerability.