CVE-2022-25434 : Exploit Details and Defense Strategies

Tenda AC9 v15.03.2.21 was discovered to contain a stack overflow vulnerability through the firewallen parameter in the SetFirewallCfg function.

Understanding CVE-2022-25434

This CVE identifies a vulnerability in Tenda AC9 v15.03.2.21 that could be exploited through a stack overflow.

What is CVE-2022-25434?

CVE-2022-25434 relates to a stack overflow vulnerability found in the firewallen parameter of the SetFirewallCfg function in Tenda AC9 v15.03.2.21.

The Impact of CVE-2022-25434

This vulnerability could allow an attacker to execute arbitrary code or crash the affected system, potentially leading to a denial of service (DoS) situation.

Technical Details of CVE-2022-25434

In the context of CVE-2022-25434:

Vulnerability Description

The presence of a stack overflow in the firewallen parameter of the SetFirewallCfg function in Tenda AC9 v15.03.2.21 could be exploited by an attacker.

Affected Systems and Versions

Tenda AC9 v15.03.2.21 is specifically impacted by this vulnerability where the firewallen parameter is mishandled.

Exploitation Mechanism

Attackers could potentially trigger the stack overflow through crafted input in the firewallen parameter, leading to the exploitation of this vulnerability.

Mitigation and Prevention

When addressing CVE-2022-25434, the following steps can help enhance security:

Immediate Steps to Take

Disable remote access if not required.
Apply vendor-supplied patches or updates promptly.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement network segmentation to contain potential attacks.

Patching and Updates

Stay informed about security updates from Tenda and apply patches as soon as they are released.