CVE-2019-14363 : Security Advisory and Response

A buffer overflow vulnerability in NETGEAR WNDR3400v3 routers allows remote code execution via a specially crafted UPnP SSDP packet.

Understanding CVE-2019-14363

This CVE identifies a critical security issue in NETGEAR WNDR3400v3 routers that can be exploited by attackers to execute arbitrary code remotely.

What is CVE-2019-14363?

A stack-based buffer overflow in the upnpd binary of NETGEAR WNDR3400v3 routers with firmware version 1.0.1.18_1.0.63 enables attackers to trigger the vulnerability by sending a malicious UPnP SSDP packet.

The Impact of CVE-2019-14363

The vulnerability allows threat actors to execute arbitrary code on affected routers, potentially leading to unauthorized access, data theft, or further network compromise.

Technical Details of CVE-2019-14363

This section delves into the specifics of the vulnerability.

Vulnerability Description

The upnpd binary in NETGEAR WNDR3400v3 routers is susceptible to a buffer overflow, enabling remote code execution through a crafted UPnP SSDP packet.

Affected Systems and Versions

Product: NETGEAR WNDR3400v3 routers
Firmware Version: 1.0.1.18_1.0.63

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted UPnP SSDP packet to the affected router, triggering the buffer overflow and executing malicious code.

Mitigation and Prevention

Protecting systems from CVE-2019-14363 requires immediate action and long-term security measures.

Immediate Steps to Take

Disable UPnP on the affected routers to mitigate the risk of exploitation.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update router firmware to patch known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Check for firmware updates from NETGEAR to address the CVE-2019-14363 vulnerability.