CVE-2021-33209 : Exploit Details and Defense Strategies

An issue was discovered in Fimer Aurora Vision before version 2.97.10 where a failed login attempt reveals whether the username or password is incorrect, aiding attackers in enumerating usernames and potentially facilitating brute-force attacks.

Understanding CVE-2021-33209

This CVE identifies a vulnerability in Fimer Aurora Vision that can be exploited by attackers to discover valid usernames through the login page's response.

What is CVE-2021-33209?

The issue in Fimer Aurora Vision allows attackers to differentiate between an incorrect username and password during a failed login, potentially simplifying brute-force attacks by assisting in username enumeration.

The Impact of CVE-2021-33209

The disclosure of this information can make it easier for malicious actors to launch brute-force attacks on user accounts, increasing the risk of unauthorized access to the system.

Technical Details of CVE-2021-33209

This section delves into the specifics of the vulnerability, the affected systems and versions, as well as how the exploitation can occur.

Vulnerability Description

The vulnerability in Fimer Aurora Vision exposes whether the username or password is incorrect, aiding attackers in profiling valid usernames for potential misuse.

Affected Systems and Versions

Fimer Aurora Vision versions prior to 2.97.10 are impacted by this vulnerability, leaving systems running on these versions at risk.

Exploitation Mechanism

By leveraging the disclosed information in the login response, threat actors can streamline their username enumeration process and launch brute-force attacks more effectively.

Mitigation and Prevention

Here, we discuss the immediate steps to take to mitigate the risk posed by CVE-2021-33209 and provide suggestions for long-term security practices.

Immediate Steps to Take

Users and system administrators are advised to upgrade to Fimer Aurora Vision version 2.97.10 or later to address this vulnerability effectively.

Long-Term Security Practices

In addition to updating the software, implementing strong password policies, multi-factor authentication, and monitoring login attempts can enhance overall system security.

Patching and Updates

Regularly applying security patches and keeping software up to date are crucial practices to prevent exploitation of known vulnerabilities like CVE-2021-33209.