CVE-2021-3391 Explained : Impact and Mitigation
Learn about CVE-2021-3391 affecting MobileIron Mobile@Work, allowing attackers to distinguish user account statuses by failed login attempts. Find mitigation steps and security best practices.
MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user accounts by observing the number of failed login attempts needed to produce a Lockout error message
Understanding CVE-2021-3391
This CVE relates to a vulnerability in MobileIron Mobile@Work up to 2021-03-22 that enables attackers to differentiate between valid, disabled, and non-existent user accounts.
What is CVE-2021-3391?
The CVE-2021-3391 vulnerability in MobileIron Mobile@Work permits attackers to identify valid, disabled, and non-existent user accounts based on the number of failed login attempts necessary to trigger a Lockout error message.
The Impact of CVE-2021-3391
Attackers can exploit this vulnerability to determine the status of user accounts, potentially aiding them in unauthorized access attempts or reconnaissance activities.
Technical Details of CVE-2021-3391
This section covers the specifics of the CVE-2021-3391 vulnerability to help users understand its implications.
Vulnerability Description
MobileIron Mobile@Work up to 2021-03-22 allows threat actors to discern between different user account statuses by observing the failed login attempt thresholds.
Affected Systems and Versions
All versions of MobileIron Mobile@Work software released until 2021-03-22 are affected by this vulnerability.
Exploitation Mechanism
By monitoring the number of failed login attempts required to trigger a Lockout error message, attackers can distinguish between active, disabled, or non-existent user accounts.
Mitigation and Prevention
To address the CVE-2021-3391 vulnerability, implement the following mitigation strategies and security best practices.
Immediate Steps to Take
- Update the MobileIron Mobile@Work software to the latest version to eliminate the vulnerability.
Long-Term Security Practices
- Regularly review and monitor user account access logs for any suspicious activity.
- Conduct security awareness training to educate users on safe login practices.
Patching and Updates
Stay informed about security advisories from MobileIron and apply patches promptly to secure your systems.