CVE-2022-4498 : Security Advisory and Response

A vulnerable HTTP Basic Authentication process in TP-Link routers, Archer C5 and WR710N-V1, is susceptible to either a DoS or an arbitrary code execution via any interface.

Understanding CVE-2022-4498

In TP-Link routers, Archer C5 and WR710N-V1, running the latest available code, when receiving HTTP Basic Authentication the httpd service can be sent a crafted packet that causes a heap overflow. This can result in either a DoS (by crashing the httpd process) or an arbitrary code execution.

What is CVE-2022-4498?

CVE-2022-4498 involves a vulnerability in TP-Link routers, specifically Archer C5 and WR710N-V1 models, that allows for a heap overflow when receiving HTTP Basic Authentication packets.

The Impact of CVE-2022-4498

The vulnerability can lead to a denial of service (DoS) by crashing the httpd process or allow for arbitrary code execution, posing serious security risks to affected devices.

Technical Details of CVE-2022-4498

Vulnerability Description

The vulnerability (CWE-120) results from a buffer overflow in the httpd service of TP-Link routers, opening the door to DoS attacks or the execution of malicious code.

Affected Systems and Versions

Vendor: TP-Link
Product: WR710N
Affected Version: V1-151022
Product: Archer C5
Affected Version: V2_160221_US

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted packets to the httpd service, causing a heap overflow and potentially leading to DoS or arbitrary code execution.

Mitigation and Prevention

Immediate Steps to Take

Immediately apply security patches released by TP-Link to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Regularly update firmware and implement strong network security measures to mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories from TP-Link and promptly apply patches to secure your devices against known vulnerabilities.