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CVE-2020-8890 : What You Need to Know

Discover the impact of CVE-2020-8890, a vulnerability in MISP versions prior to 2.4.121. Learn about the exploitation mechanism, affected systems, and mitigation steps.

An issue was discovered in MISP before 2.4.121. It mishandled time skew when trying to block a brute-force series of invalid requests.

Understanding CVE-2020-8890

This CVE entry describes a vulnerability in MISP that could be exploited due to mishandling time skew between the web server and the database.

What is CVE-2020-8890?

The vulnerability in MISP before version 2.4.121 arises from incorrect handling of time skew during the prevention of brute-force attacks with invalid requests.

The Impact of CVE-2020-8890

The mishandling of time skew in MISP could potentially allow threat actors to bypass security measures and launch successful brute-force attacks, compromising the system's integrity and confidentiality.

Technical Details of CVE-2020-8890

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability in MISP versions prior to 2.4.121 stems from the inaccurate management of time skew between the web server and the database, enabling the circumvention of security controls.

Affected Systems and Versions

        Product: MISP
        Vendor: N/A
        Versions affected: All versions before 2.4.121

Exploitation Mechanism

The vulnerability can be exploited by leveraging the mishandled time skew to launch a series of invalid requests, potentially leading to successful brute-force attacks.

Mitigation and Prevention

Protecting systems from CVE-2020-8890 requires immediate actions and long-term security practices.

Immediate Steps to Take

        Update MISP to version 2.4.121 or later to mitigate the vulnerability.
        Monitor system logs for any suspicious activities indicating brute-force attempts.

Long-Term Security Practices

        Regularly review and update security configurations to prevent similar vulnerabilities.
        Implement strong authentication mechanisms to deter unauthorized access attempts.

Patching and Updates

        Apply patches and updates provided by MISP promptly to address security flaws and enhance system resilience.

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