CVE-2021-25923 : Security Advisory and Response

OpenEMR versions 5.0.0 to 6.0.0.1 are vulnerable to weak password requirements, allowing for an account takeover if the first 72 characters of a user's password are known.

Understanding CVE-2021-25923

This CVE highlights a security issue in OpenEMR related to weak password enforcement.

What is CVE-2021-25923?

OpenEMR, from versions 5.0.0 to 6.0.0.1, lacks a maximum password length limit, making it susceptible to exploitation. Malicious actors can perform an account takeover with knowledge of the first 72 characters of a user's password.

The Impact of CVE-2021-25923

The vulnerability poses a significant risk as it enables unauthorized access to user accounts, potentially leading to data breaches and other malicious activities.

Technical Details of CVE-2021-25923

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The weakness lies in the lack of enforcement of a maximum password length, making it easier for threat actors to take over accounts with partial password knowledge.

Affected Systems and Versions

OpenEMR versions between 5.0.0 and 6.0.0.1 are confirmed to be impacted by this vulnerability.

Exploitation Mechanism

By utilizing the first 72 characters of a victim's password, attackers can exploit this flaw to gain unauthorized entry to user accounts.

Mitigation and Prevention

Discover how to address and prevent the CVE-2021-25923 vulnerability.

Immediate Steps to Take

Users are advised to update their OpenEMR installations to the latest secure versions and encourage robust password practices.

Long-Term Security Practices

Practicing password hygiene, such as regularly updating passwords and utilizing multi-factor authentication, can enhance overall security posture.

Patching and Updates

OpenEMR users should keep their systems up-to-date with the latest patches and security fixes to mitigate the risk of exploitation.