CVE-2019-20728 : Security Advisory and Response

A buffer overflow vulnerability affecting certain NETGEAR devices when accessed by an authenticated user.

Understanding CVE-2019-20728

What is CVE-2019-20728?

The buffer overflow vulnerability impacts specific NETGEAR devices when accessed by authenticated users. It is present in various device models and firmware versions.

The Impact of CVE-2019-20728

The vulnerability has a CVSS base score of 6.3, indicating a medium severity level. It poses a high risk to confidentiality and integrity, requiring high privileges for exploitation.

Technical Details of CVE-2019-20728

Vulnerability Description

The buffer overflow vulnerability allows authenticated users to execute arbitrary code on affected NETGEAR devices.

Affected Systems and Versions

Device models: D6400, D7000v2, D7800, D8500, DGN2200v4, DGND2200Bv4, DM200, JNDR3000, RBK50, RBR50, RBS50, RBW30, R6250, R6300v2, R6400, R6400v2, R6700, R6900, R7000, R6900P, R7000P, R7100LG, R7300DST, R7500v2, R7800, R7900, R8000, R7900P, R8000P, R8300, R8500, R8900, R9000, WNDR3400v3, WNDR3700v4, WNDR4300v1, WNDR4300v2, WNDR4500v3, WNR2000v5, WNR3500Lv2
Firmware versions: Various versions before the specified ones

Exploitation Mechanism

The vulnerability can be exploited locally with low attack complexity, impacting confidentiality and integrity with high severity.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches provided by NETGEAR for the affected devices.
Restrict network access to trusted users only.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update firmware and software to the latest versions.
Implement strong password policies and multi-factor authentication.

Patching and Updates

Keep abreast of security advisories from NETGEAR and promptly apply recommended patches to mitigate the vulnerability.