CVE-2021-43188 : Security Advisory and Response

In JetBrains YouTrack Mobile before 2021.2, access token protection on iOS is incomplete.

Understanding CVE-2021-43188

In JetBrains YouTrack Mobile before 2021.2, a vulnerability exists related to incomplete access token protection on iOS.

What is CVE-2021-43188?

This CVE identifies a security issue in JetBrains YouTrack Mobile prior to version 2021.2, where the access token protection mechanism on iOS is not fully implemented.

The Impact of CVE-2021-43188

The incomplete access token protection may lead to unauthorized access to sensitive data stored in JetBrains YouTrack Mobile on iOS devices.

Technical Details of CVE-2021-43188

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability in JetBrains YouTrack Mobile before 2021.2 allows for inadequate protection of access tokens on the iOS platform, potentially exposing sensitive information.

Affected Systems and Versions

Product: JetBrains YouTrack Mobile
Vendor: JetBrains
Versions affected: All versions before 2021.2

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to gain unauthorized access to user data due to the incomplete access token protection on iOS.

Mitigation and Prevention

Here are the steps to mitigate and prevent exploitation of CVE-2021-43188.

Immediate Steps to Take

Update JetBrains YouTrack Mobile to version 2021.2 or newer to patch the vulnerability.
Regularly monitor for any unusual activities on the application that might indicate unauthorized access.

Long-Term Security Practices

Implement multifactor authentication (MFA) to add an extra layer of security.
Conduct security audits and penetration testing regularly to identify and address vulnerabilities.

Patching and Updates

Stay informed about security bulletins and updates from JetBrains to apply patches promptly.