CVE-2019-20850 : What You Need to Know

A vulnerability has been identified in versions prior to 1.26.0 of Mattermost Mobile Apps where a view cache may remain stored on the device after a logout.

Understanding CVE-2019-20850

This CVE identifies an issue in Mattermost Mobile Apps before version 1.26.0 where a view cache can persist on a device after a logout.

What is CVE-2019-20850?

CVE-2019-20850 is a vulnerability in Mattermost Mobile Apps that allows a view cache to remain stored on the device post-logout.

The Impact of CVE-2019-20850

The vulnerability could potentially lead to unauthorized access to sensitive information stored in the view cache, compromising user privacy and security.

Technical Details of CVE-2019-20850

This section provides technical details of the vulnerability.

Vulnerability Description

An issue in Mattermost Mobile Apps before version 1.26.0 allows a view cache to persist on the device after a user logs out, potentially exposing sensitive data.

Affected Systems and Versions

Affected Version: Prior to 1.26.0 of Mattermost Mobile Apps

Exploitation Mechanism

The vulnerability occurs due to improper handling of the view cache, allowing it to remain accessible post-logout.

Mitigation and Prevention

Protecting systems from CVE-2019-20850 is crucial to maintaining security.

Immediate Steps to Take

Update Mattermost Mobile Apps to version 1.26.0 or newer to mitigate the vulnerability.
Clear the cache on the device after logging out to prevent unauthorized access.

Long-Term Security Practices

Regularly update mobile applications to the latest versions to patch known vulnerabilities.
Implement secure coding practices to prevent similar issues in future releases.

Patching and Updates

Stay informed about security updates from Mattermost and apply patches promptly to address vulnerabilities.