CVE-2022-38313 : Security Advisory and Response

A stack overflow vulnerability was discovered in Tenda AC18 router versions v15.03.05.19 and v15.03.05.05 that can be exploited via the time parameter at /goform/saveParentControlInfo.

Understanding CVE-2022-38313

This section provides an overview of the CVE-2022-38313 vulnerability.

What is CVE-2022-38313?

The CVE-2022-38313 vulnerability exists in Tenda AC18 routers due to a stack overflow issue in the handling of the time parameter at /goform/saveParentControlInfo endpoint.

The Impact of CVE-2022-38313

Exploitation of this vulnerability could allow remote attackers to execute arbitrary code or crash the affected router, leading to a denial of service condition.

Technical Details of CVE-2022-38313

Explore the technical aspects of the CVE-2022-38313 vulnerability below.

Vulnerability Description

The vulnerability arises from inadequate input validation on the time parameter, enabling attackers to trigger a stack overflow, potentially leading to remote code execution.

Affected Systems and Versions

Tenda AC18 router versions v15.03.05.19 and v15.03.05.05 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specifically crafted requests with malicious input to the /goform/saveParentControlInfo endpoint, causing a stack overflow.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2022-38313 below.

Immediate Steps to Take

Disable remote access if not needed.
Monitor vendor updates and security advisories for patches.
Implement firewall rules to restrict access to vulnerable endpoints.

Long-Term Security Practices

Regularly update firmware to the latest version.
Conduct security assessments to identify and remediate vulnerabilities.

Patching and Updates

Ensure timely application of patches released by Tenda for the AC18 router to address the stack overflow vulnerability.