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CVE-2017-18890 : What You Need to Know

Discover the security vulnerability in Mattermost Server versions 4.3.0, 4.2.1, and 4.1.2 allowing attackers to initiate API requests via a malicious button. Learn how to mitigate the risks.

A vulnerability has been found in versions 4.3.0, 4.2.1, and 4.1.2 of Mattermost Server that allows an attacker to initiate an API request by creating a malicious button.

Understanding CVE-2017-18890

This CVE identifies a security flaw in Mattermost Server versions 4.3.0, 4.2.1, and 4.1.2 that can be exploited by attackers.

What is CVE-2017-18890?

This vulnerability enables an attacker to generate a button that, when clicked by a user, triggers an API request.

The Impact of CVE-2017-18890

The vulnerability can lead to unauthorized API requests being initiated by malicious actors, potentially compromising the security and integrity of the system.

Technical Details of CVE-2017-18890

Mattermost Server versions 4.3.0, 4.2.1, and 4.1.2 are affected by this vulnerability.

Vulnerability Description

An attacker can create a button that, when interacted with by a user, launches an API request.

Affected Systems and Versions

        Mattermost Server versions 4.3.0, 4.2.1, and 4.1.2

Exploitation Mechanism

        Attackers can exploit this vulnerability by crafting a malicious button that triggers unauthorized API requests.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigating the risks associated with CVE-2017-18890.

Immediate Steps to Take

        Update Mattermost Server to a patched version that addresses the vulnerability.
        Educate users about the risks of interacting with unknown or suspicious buttons.

Long-Term Security Practices

        Regularly monitor and audit API requests for any unusual or unauthorized activities.
        Conduct security training for developers to enhance awareness of secure coding practices.

Patching and Updates

        Apply security patches provided by Mattermost promptly to ensure the system is protected against known vulnerabilities.

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