CVE-2021-22308 : Security Advisory and Response

A Business Logic Errors vulnerability in Huawei Smartphone allows malicious apps to take screenshots in the background, potentially leading to personal information leakage.

Understanding CVE-2021-22308

This CVE involves a security issue related to Business Logic Errors in Huawei Smartphone.

What is CVE-2021-22308?

The vulnerability allows installed malicious apps to take screenshots without user consent, posing a risk of personal data exposure.

The Impact of CVE-2021-22308

While the issue doesn't cause system errors, it can result in unauthorized access to sensitive information stored on the device.

Technical Details of CVE-2021-22308

This section covers the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability stems from a lack of proper checks, enabling apps to bypass security measures and capture screenshots surreptitiously.

Affected Systems and Versions

EMUI versions 11.0.0, 10.1.1, 10.1.0, and 10.0.0, as well as Magic UI versions 4.0.0, 3.1.1, 3.1.0, and 3.0.0, are impacted by this vulnerability.

Exploitation Mechanism

Malicious apps leverage the vulnerability to continuously capture screenshots in the background without user awareness or permission.

Mitigation and Prevention

To address CVE-2021-22308, users and organizations should take the following actions.

Immediate Steps to Take

Regularly monitor device activity and permissions granted to installed apps.
Avoid downloading apps from untrusted sources or developers.

Long-Term Security Practices

Keep devices updated with the latest security patches and firmware releases.
Implement app whitelisting and review permissions requested by applications.

Patching and Updates

Huawei is likely to release security patches to fix this vulnerability. Users are advised to promptly apply these updates to mitigate the risk of exploitation.