CVE-2021-22423 : Security Advisory and Response

HarmonyOS, developed by Huawei, is impacted by an Out-of-bounds Write Vulnerability in version 2.0. This flaw could be exploited by local attackers, leading to an integer overflow.

Understanding CVE-2021-22423

What is CVE-2021-22423?

The CVE-2021-22423 is a security vulnerability found in the HarmonyOS operating system, enabling local attackers to trigger an integer overflow through an Out-of-bounds Write.

The Impact of CVE-2021-22423

The impact of this vulnerability allows malicious actors to potentially execute arbitrary code or crash the affected system, posing a serious risk to the security of devices running HarmonyOS version 2.0.

Technical Details of CVE-2021-22423

Vulnerability Description

The vulnerability lies within a component of HarmonyOS, which enables the exploitation by local attackers to trigger an Out-of-bounds Write, resulting in an integer overflow.

Affected Systems and Versions

HarmonyOS version 2.0 is confirmed to be affected by this vulnerability, leaving devices running this specific version at risk.

Exploitation Mechanism

Local attackers can abuse this vulnerability to perform an integer overflow through an out-of-bounds write operation, potentially leading to further malicious activities.

Mitigation and Prevention

Immediate Steps to Take

To mitigate the risk associated with CVE-2021-22423, users are advised to stay updated with security advisories from Huawei regarding HarmonyOS. Applying security patches promptly is crucial to protect devices from potential attacks.

Long-Term Security Practices

Implementing strict access controls, network segmentation, and regular security audits can enhance the overall security posture of systems running HarmonyOS.

Patching and Updates

Users should ensure that they install the latest security updates released by Huawei for HarmonyOS to address the CVE-2021-22423 vulnerability and other potential security issues.