CVE-2020-8892 : Vulnerability Insights and Analysis

An issue was discovered in MISP before 2.4.121. It did not consider the HTTP PUT method when trying to block a brute-force series of invalid requests.

Understanding CVE-2020-8892

This CVE describes a vulnerability in MISP versions prior to 2.4.121 that could allow a brute-force attack due to inadequate handling of the HTTP PUT method.

What is CVE-2020-8892?

The vulnerability in MISP versions before 2.4.121 arises from a failure to account for the HTTP PUT method, potentially enabling malicious actors to carry out brute-force attacks.

The Impact of CVE-2020-8892

The vulnerability could lead to unauthorized access or disruption of services by exploiting the lack of proper validation for the HTTP PUT method in MISP instances.

Technical Details of CVE-2020-8892

Vulnerability Description

The issue in MISP versions prior to 2.4.121 allows for a series of invalid requests to go unchecked when using the HTTP PUT method, creating a security gap.

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 sending a series of malicious HTTP PUT requests to the MISP instance, potentially leading to unauthorized access or service disruption.

Mitigation and Prevention

Immediate Steps to Take

Upgrade MISP to version 2.4.121 or later to patch the vulnerability.
Monitor network traffic for any suspicious PUT requests.

Long-Term Security Practices

Regularly update MISP and other software components to address security flaws promptly.
Implement strong access controls and authentication mechanisms to prevent unauthorized access.

Patching and Updates

Ensure timely installation of security patches and updates for MISP to mitigate the risk of exploitation.