CVE-2021-0341 Explained : Impact and Mitigation

This article provides detailed information about CVE-2021-0341, a vulnerability affecting Android versions 8.1 to 11, leading to remote information disclosure.

Understanding CVE-2021-0341

This section sheds light on the impact and technical details of the CVE-2021-0341 vulnerability.

What is CVE-2021-0341?

CVE-2021-0341 is centered around the verifyHostName function in OkHostnameVerifier.java. It allows accepting a certificate for the wrong domain, potentially leading to remote information disclosure without requiring additional execution privileges.

The Impact of CVE-2021-0341

The vulnerability poses a risk of remote information disclosure, with no user interaction needed for exploitation. This could expose sensitive data to unauthorized parties.

Technical Details of CVE-2021-0341

This section covers the specifics of the vulnerability, including affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The flaw stems from improperly used cryptography in the verifyHostName function, enabling the acceptance of certificates for incorrect domains.

Affected Systems and Versions

Android versions 8.1 to 11 are impacted by CVE-2021-0341, leaving a wide range of devices vulnerable to potential data exposure.

Exploitation Mechanism

Attackers can exploit the vulnerability to disclose remote information without the need for user interaction, highlighting a critical security risk.

Mitigation and Prevention

To safeguard systems against CVE-2021-0341, immediate action and long-term security practices are crucial.

Immediate Steps to Take

Consider implementing security measures to mitigate the risk of information disclosure, such as restricting network access and monitoring SSL certificate validations.

Long-Term Security Practices

Regular security assessments, code reviews, and updates are integral in maintaining a secure environment and preventing similar vulnerabilities in the future.

Patching and Updates

Stay informed about security patches and updates from Android to address CVE-2021-0341 and other potential vulnerabilities.