CVE-2019-20878 : Security Advisory and Response
Discover the impact of CVE-2019-20878 on Mattermost Server versions prior to 5.9.0, 5.8.1, 5.7.3, and 4.10.8. Learn about the mishandling of email address modifications and how to mitigate this security risk.
A problem was identified in Mattermost Server versions prior to 5.9.0, 5.8.1, 5.7.3, and 4.10.8. The application fails to handle modifications made to email addresses correctly.
Understanding CVE-2019-20878
An issue was discovered in Mattermost Server before versions 5.9.0, 5.8.1, 5.7.3, and 4.10.8. Changes to email addresses within the application are mishandled.
What is CVE-2019-20878?
CVE-2019-20878 is a vulnerability in Mattermost Server that affects versions prior to 5.9.0, 5.8.1, 5.7.3, and 4.10.8. It involves incorrect handling of modifications to email addresses.
The Impact of CVE-2019-20878
This vulnerability could potentially lead to security breaches and unauthorized access due to the mishandling of email address changes within the application.
Technical Details of CVE-2019-20878
The following technical details provide insight into the vulnerability.
Vulnerability Description
The application fails to correctly manage modifications made to email addresses, potentially leading to security risks.
Affected Systems and Versions
- Mattermost Server versions prior to 5.9.0
- Mattermost Server versions prior to 5.8.1
- Mattermost Server versions prior to 5.7.3
- Mattermost Server versions prior to 4.10.8
Exploitation Mechanism
Attackers could exploit this vulnerability by manipulating email addresses within the application to gain unauthorized access or disrupt services.
Mitigation and Prevention
To address CVE-2019-20878, consider the following mitigation strategies:
Immediate Steps to Take
- Update Mattermost Server to versions 5.9.0, 5.8.1, 5.7.3, or 4.10.8, which contain fixes for this vulnerability.
- Monitor email address changes for any suspicious activity.
Long-Term Security Practices
- Regularly review and update security policies regarding email address modifications.
- Conduct security training to educate users on the importance of secure email practices.
Patching and Updates
- Stay informed about security updates and patches released by Mattermost.
- Implement a robust patch management process to promptly apply updates and fixes to mitigate vulnerabilities.