CVE-2023-36358 : Security Advisory and Response

A buffer overflow vulnerability was discovered in TP-Link TL-WR940N, TL-WR941ND, TL-WR743ND, and TL-WR841N routers, potentially leading to a Denial of Service (DoS) attack.

Understanding CVE-2023-36358

This CVE-2023-36358 involves a buffer overflow in the /userRpm/AccessCtrlAccessTargetsRpm component of specific TP-Link routers, allowing attackers to trigger a DoS attack.

What is CVE-2023-36358?

CVE-2023-36358 identifies a vulnerability in TP-Link routers that could be exploited by malicious actors to disrupt device services by sending a specially crafted GET request.

The Impact of CVE-2023-36358

The vulnerability could result in a DoS condition, rendering the affected TP-Link routers unresponsive and causing disruptions to network services and connectivity.

Technical Details of CVE-2023-36358

The following details provide insights into the vulnerability's scope and potential risks associated with CVE-2023-36358.

Vulnerability Description

The buffer overflow vulnerability in the /userRpm/AccessCtrlAccessTargetsRpm component of TP-Link routers enables threat actors to execute a DoS attack by exploiting a crafted GET request.

Affected Systems and Versions

TP-Link models affected by CVE-2023-36358 include TL-WR940N V2/V3/V4, TL-WR941ND V5/V6, TL-WR743ND V1, and TL-WR841N V8 routers.

Exploitation Mechanism

Attackers can exploit the vulnerability by sending a specifically manipulated GET request, triggering the buffer overflow condition and potentially causing a DoS scenario.

Mitigation and Prevention

Understanding how to mitigate and prevent exploitation of CVE-2023-36358 is crucial to safeguarding TP-Link routers from potential attacks.

Immediate Steps to Take

Update firmware to the latest version provided by TP-Link to patch the vulnerability and enhance router security.
Monitor network traffic and look out for unusual or suspicious activities that could indicate an ongoing attack.

Long-Term Security Practices

Regularly check for firmware updates and security advisories from TP-Link to stay informed about potential vulnerabilities and security patches.
Implement network segmentation and access controls to limit the impact of potential attacks on critical systems.

Patching and Updates

Apply security patches promptly as soon as they are released by TP-Link to ensure that vulnerabilities like CVE-2023-36358 are addressed and mitigated effectively.