CVE-2022-28557 : Vulnerability Insights and Analysis

This article provides an overview of CVE-2022-28557, a command injection vulnerability in the Tenda AC15 device that can lead to arbitrary command execution when combined with CVE-2021-44971.

Understanding CVE-2022-28557

CVE-2022-28557 is a security vulnerability discovered in the /goform/setsambacfg interface of Tenda AC15 US_AC15V1.0BR_V15.03.05.20_multi_TDE01.bin device web. This vulnerability, when exploited with CVE-2021-44971, allows threat actors to execute arbitrary commands without any restrictions.

What is CVE-2022-28557?

The CVE-2022-28557 vulnerability involves a command injection flaw in the specified interface of the Tenda AC15 device. By leveraging this weakness, attackers can execute commands of their choice on the affected device, posing a significant risk to its security.

The Impact of CVE-2022-28557

The exploitation of CVE-2022-28557 can result in unauthorized access, data theft, service disruption, and complete compromise of the Tenda AC15 device. Attackers can potentially take full control of the device, leading to severe consequences.

Technical Details of CVE-2022-28557

Vulnerability Description

The vulnerability exists due to improper input validation in the /goform/setsambacfg interface, allowing attackers to inject and execute arbitrary commands on the Tenda AC15 device. When combined with CVE-2021-44971, the impact amplifies.

Affected Systems and Versions

The vulnerability affects Tenda AC15 US_AC15V1.0BR_V15.03.05.20_multi_TDE01.bin devices. The specific versions impacted by this security flaw are vulnerable to exploitation, highlighting the importance of timely mitigation.

Exploitation Mechanism

Threat actors can exploit CVE-2022-28557 by sending crafted requests to the vulnerable /goform/setsambacfg interface, enabling the injection and execution of malicious commands. The combination with CVE-2021-44971 enhances the attacker's capabilities.

Mitigation and Prevention

Immediate Steps to Take

To mitigate the risks associated with CVE-2022-28557, users of Tenda AC15 devices should immediately apply security patches provided by the vendor. Additionally, restricting access to the vulnerable interface can reduce the attack surface.

Long-Term Security Practices

In the long term, organizations should prioritize regular security assessments, network segmentation, and employee training to enhance overall cybersecurity posture. By staying informed about emerging threats, they can better protect their assets.

Patching and Updates

Regularly monitor for security updates and patches released by Tenda for the AC15 device. Promptly apply these patches to ensure that known vulnerabilities like CVE-2022-28557 are effectively addressed and the device remains secure.