CVE-2020-10923 : Security Advisory and Response

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers.

Understanding CVE-2020-10923

This CVE entry describes a critical vulnerability in NETGEAR R6700 routers that enables attackers to bypass authentication, potentially leading to arbitrary code execution.

What is CVE-2020-10923?

The vulnerability allows network-adjacent attackers to exploit the UPnP service on affected routers to bypass authentication without requiring any credentials.

The Impact of CVE-2020-10923

CVSS Base Score: 6.5 (Medium Severity)
Confidentiality Impact: High
Integrity Impact: None
Availability Impact: None

Technical Details of CVE-2020-10923

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw exists within the UPnP service of NETGEAR R6700 routers, specifically on TCP port 5000, allowing crafted UPnP messages to bypass authentication.

Affected Systems and Versions

Affected Product: NETGEAR R6700
Affected Version: V1.0.4.84_10.0.58

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted UPnP message to the router, enabling them to bypass authentication and potentially execute arbitrary code.

Mitigation and Prevention

Protecting systems from CVE-2020-10923 requires immediate action and long-term security measures.

Immediate Steps to Take

Disable UPnP on affected routers if not essential
Monitor network traffic for any suspicious UPnP activities
Apply vendor-supplied patches or updates

Long-Term Security Practices

Regularly update router firmware to address security vulnerabilities
Implement strong network segmentation and access controls

Patching and Updates

NETGEAR may release patches or firmware updates to address this vulnerability. Stay informed about security advisories and apply updates promptly.