CVE-2021-37862 : Vulnerability Insights and Analysis
Learn about CVE-2021-37862 impacting Mattermost 6.0 and earlier versions due to email address validation flaws during registration. Discover the impact, technical details, and mitigation strategies.
Mattermost 6.0 and earlier versions are susceptible to a vulnerability that enables attackers to deceive users into registering with attacker-controlled email addresses. This article provides insights on the impact, technical details, and mitigation strategies related to CVE-2021-37862.
Understanding CVE-2021-37862
This section delves into the details of the CVE-2021-37862 vulnerability.
What is CVE-2021-37862?
The vulnerability in Mattermost 6.0 and prior versions arises from inadequate validation of email addresses during registration. Attackers can exploit this by persuading users to sign up using crafted invitation tokens with malicious email addresses.
The Impact of CVE-2021-37862
The CVSS v3.1 base score for CVE-2021-37862 is 3.7, indicating a low severity level. The attack complexity is high with a network-based attack vector. While the confidentiality, integrity, and privileges impact are low, user interaction is required for successful exploitation.
Technical Details of CVE-2021-37862
This section provides technical insights into the CVE-2021-37862 vulnerability.
Vulnerability Description
The vulnerability stems from the failure to adequately validate email addresses during user registration, enabling attackers to manipulate users into registering with controlled email addresses.
Affected Systems and Versions
Mattermost versions 6.0 and below are affected by CVE-2021-37862 due to the flawed email address validation mechanism during registration.
Exploitation Mechanism
Attackers can trick users into using attacker-controlled email addresses through specially crafted invitation tokens, exploiting the lack of proper validation.
Mitigation and Prevention
This section outlines the steps to mitigate and prevent exploits related to CVE-2021-37862.
Immediate Steps to Take
Users are advised to update Mattermost to versions beyond 6.0, where the vulnerability has been addressed.
Long-Term Security Practices
Implement robust email address validation mechanisms and educate users about the risks associated with registering using suspicious email addresses.
Patching and Updates
Regularly update Mattermost to the latest versions to ensure that known vulnerabilities are patched and security measures are up-to-date.