CVE-2021-30141 Explained : Impact and Mitigation

Module/Settings/UserExport.php in Friendica through 2021.01 allows settings/userexport to be used by anonymous users, leading to attempted access to an array offset on a value of type null and excessive memory consumption. The vendor states that the feature still requires a valid authentication cookie even if the route is accessible to non-logged users.

Understanding CVE-2021-30141

This CVE entry pertains to a vulnerability in Friendica that allows unauthorized access to a specific user export feature, potentially resulting in memory-related issues and unauthorized data access.

What is CVE-2021-30141?

CVE-2021-30141 refers to a security flaw in Friendica that enables anonymous users to exploit a user export functionality which should require proper authentication, leading to memory issues and potential data exposure.

The Impact of CVE-2021-30141

The impact of this vulnerability includes unauthorized access to user export features, attempted access to null values causing memory problems, and potential security risks associated with unauthorized data access.

Technical Details of CVE-2021-30141

In-depth technical information related to the CVE-2021-30141 vulnerability in Friendica, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability allows anonymous users to access the user export functionality in Friendica, leading to memory issues and potential unauthorized data access.

Affected Systems and Versions

Friendica instances through version 2021.01 are affected by this vulnerability, potentially exposing them to unauthorized access and memory-related problems.

Exploitation Mechanism

The exploitation involves unauthorized users leveraging the user export functionality without proper authentication, resulting in memory consumption issues and potential data exposure.

Mitigation and Prevention

Guidance on mitigating the risks posed by CVE-2021-30141 in Friendica, including immediate steps to take, long-term security practices, and the importance of timely patching and updates.

Immediate Steps to Take

Immediate actions to reduce the risk include restricting access to the user export feature, ensuring proper authentication requirements, and monitoring for any suspicious activity.

Long-Term Security Practices

Implementing robust authentication mechanisms, regularly auditing access controls, and educating users on security best practices can help prevent similar vulnerabilities in the future.

Patching and Updates

Staying updated with the latest patches and security updates for Friendica is crucial to address vulnerabilities like CVE-2021-30141 and enhance overall system security.