CVE-2021-22411 Explained : Impact and Mitigation

A detailed overview of the out-of-bounds write vulnerability in certain Huawei products, its impacts, technical details, and mitigation strategies.

Understanding CVE-2021-22411

This section provides insights into the nature of CVE-2021-22411.

What is CVE-2021-22411?

CVE-2021-22411 is an out-of-bounds write vulnerability found in Huawei products, specifically affecting NGFW Module, Secospace USG6300, Secospace USG6500, Secospace USG6600, and USG9500. The vulnerability arises due to a flawed logic in a module's code, enabling bad actors to exploit it through abnormal activities, leading to out-of-bounds write incidents.

The Impact of CVE-2021-22411

The exploit of this vulnerability could potentially disrupt the normal services of the affected Huawei products, paving the way for unauthorized access or service denial.

Technical Details of CVE-2021-22411

Delving into the specific technical aspects of CVE-2021-22411.

Vulnerability Description

The vulnerability allows threat actors to trigger out-of-bounds write incidents in the affected Huawei products by capitalizing on the faulty logic within the module's code.

Affected Systems and Versions

The vulnerable product versions include NGFW Module V500R005C00SPC100, V500R005C00SPC200; Secospace USG6300 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200; Secospace USG6500 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200; Secospace USG6600 V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200; USG9500 V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200.

Exploitation Mechanism

Attackers can exploit this vulnerability by engaging in abnormal activities that manipulate the faulty logic in the module's code, triggering out-of-bounds write actions.

Mitigation and Prevention

Guidelines on mitigating the risks posed by CVE-2021-22411 and preventing potential security breaches.

Immediate Steps to Take

Immediate actions such as applying patches, updates, or workarounds to secure the affected systems and prevent exploitation.

Long-Term Security Practices

Adopting robust security protocols, conducting regular security audits, and implementing access controls to fortify the overall security posture.

Patching and Updates

Ensuring timely installation of security patches provided by Huawei to address the vulnerability and enhance the security resilience of the impacted products.