CVE-2020-15416 Explained : Impact and Mitigation

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. The flaw exists within the httpd service, allowing attackers to execute code in the context of root.

Understanding CVE-2020-15416

This CVE identifies a stack-based buffer overflow vulnerability in NETGEAR R6700 routers.

What is CVE-2020-15416?

The vulnerability permits network-adjacent attackers to bypass authentication on affected NETGEAR R6700 routers without requiring authentication. It stems from inadequate validation of user-supplied data in the httpd service.

The Impact of CVE-2020-15416

CVSS Base Score: 8.8 (High)
Attack Vector: Adjacent Network
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Technical Details of CVE-2020-15416

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw allows attackers to execute code as root due to improper validation of user-supplied data in the httpd service.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability arises from the lack of proper validation of user-supplied data before copying it to a fixed-length, stack-based buffer.

Mitigation and Prevention

Protecting systems from CVE-2020-15416 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches promptly
Monitor network traffic for any suspicious activity
Restrict network access to vulnerable devices

Long-Term Security Practices

Regularly update firmware and software
Conduct security audits and penetration testing
Educate users on safe browsing habits

Patching and Updates

Ensure that the latest patches and updates are installed to mitigate the risk of exploitation.