CVE-2022-31446 Explained : Impact and Mitigation

This article provides an overview of CVE-2022-31446, a remote code execution vulnerability found in Tenda AC18 routers.

Understanding CVE-2022-31446

CVE-2022-31446 is a security flaw identified in Tenda AC18 routers, specifically in versions V15.03.05.19 and V15.03.05.05, allowing remote code execution through the Mac parameter at ip/goform/WriteFacMac.

What is CVE-2022-31446?

The CVE-2022-31446 vulnerability pertains to Tenda AC18 routers, enabling attackers to execute malicious code remotely by exploiting a specific parameter within the router's interface.

The Impact of CVE-2022-31446

The presence of this vulnerability poses a severe risk as threat actors can potentially take control of affected routers, compromising network security and user data.

Technical Details of CVE-2022-31446

Here are some technical insights into CVE-2022-31446:

Vulnerability Description

The flaw in Tenda AC18 routers, versions V15.03.05.19 and V15.03.05.05, exposes a vulnerability that can be exploited for remote code execution through the Mac parameter at ip/goform/WriteFacMac.

Affected Systems and Versions

Tenda AC18 routers running firmware versions V15.03.05.19 and V15.03.05.05 are susceptible to this remote code execution vulnerability via the Mac parameter.

Exploitation Mechanism

Attackers can exploit the CVE-2022-31446 vulnerability by sending crafted requests to the router's ip/goform/WriteFacMac endpoint, allowing them to execute arbitrary code remotely.

Mitigation and Prevention

Protecting against CVE-2022-31446 involves the following measures:

Immediate Steps to Take

Users of Tenda AC18 routers should immediately update their devices to the latest firmware version provided by the vendor to patch the RCE vulnerability. Additionally, disabling remote access to the router's administration interface can reduce the risk of exploitation.

Long-Term Security Practices

It is advisable to periodically check for firmware updates for your router model and implement strong security measures such as using complex passwords and enabling firewalls to enhance overall network security.

Patching and Updates

Regularly check for security updates from Tenda for your AC18 router model and apply them promptly to ensure that known vulnerabilities like CVE-2022-31446 are mitigated effectively.