CVE-2023-39550 : What You Need to Know

This article discusses the details of CVE-2023-39550, a vulnerability found in Netgear JWNR2000v2, XWN5001, and XAVN2001v2 that allows attackers to trigger buffer overflows.

Understanding CVE-2023-39550

This section provides insights into the nature and impact of CVE-2023-39550.

What is CVE-2023-39550?

CVE-2023-39550 is a vulnerability identified in Netgear JWNR2000v2, XWN5001, and XAVN2001v2 devices that enables threat actors to exploit multiple buffer overflows through specific parameters in the check_auth function.

The Impact of CVE-2023-39550

The vulnerability can be exploited by attackers to execute arbitrary code or crash the affected device, potentially leading to a complete system compromise.

Technical Details of CVE-2023-39550

This section delves into the specifics of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

Netgear JWNR2000v2 v1.0.0.11, XWN5001 v0.4.1.1, and XAVN2001v2 v0.4.0.7 are susceptible to buffer overflows triggered by the http_passwd and http_username parameters within the check_auth function.

Affected Systems and Versions

The vulnerability impacts the specified Netgear devices running the listed firmware versions, rendering them vulnerable to exploitation.

Exploitation Mechanism

By manipulating the http_passwd and http_username parameters, threat actors can trigger buffer overflows, potentially leading to unauthorized code execution or denial of service.

Mitigation and Prevention

This section outlines the immediate steps and long-term strategies for addressing CVE-2023-39550.

Immediate Steps to Take

Users are advised to apply security patches provided by Netgear and restrict network access to vulnerable devices to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing network segmentation, regular security assessments, and keeping systems updated are essential for maintaining a secure environment and preventing similar vulnerabilities.

Patching and Updates

Regularly check for firmware updates from Netgear and promptly apply patches to eliminate the vulnerabilities associated with CVE-2023-39550.