CVE-2022-1982 : Vulnerability Insights and Analysis

A crafted SVG attachment can crash a Mattermost server due to uncontrolled resource consumption vulnerability in Mattermost version 6.6.0 and earlier, impacting the server's availability.

Understanding CVE-2022-1982

This CVE refers to a vulnerability in Mattermost that allows an authenticated attacker to crash the server using a specially crafted SVG attachment.

What is CVE-2022-1982?

CVE-2022-1982 denotes an uncontrolled resource consumption issue in Mattermost versions 6.6.0 and below, where a malicious actor can exploit a crafted SVG attachment.

The Impact of CVE-2022-1982

The vulnerability can be leveraged by authenticated attackers to crash the Mattermost server, potentially leading to denial of service (DoS) incidents.

Technical Details of CVE-2022-1982

Here are the technical details regarding the CVE-2022-1982 vulnerability.

Vulnerability Description

The flaw allows an authenticated attacker to crash the server through a crafted SVG attachment on a post in Mattermost.

Affected Systems and Versions

The vulnerability affects Mattermost version 6.6.0 and earlier, including specific versions like 5.x, 6.x, 6.4.x, 6.5.x, and 6.6.x.

Exploitation Mechanism

An attacker can exploit the vulnerability by uploading a specifically crafted SVG attachment to trigger uncontrolled resource consumption.

Mitigation and Prevention

To secure your environment against CVE-2022-1982, the following steps can be taken:

Immediate Steps to Take

Configure the maximum file size for message attachments to 20 megabytes or less as a workaround measure.

Long-Term Security Practices

Implement strict file upload and validation mechanisms to prevent the upload of malicious SVG files and regularly update to patched versions.

Patching and Updates

Stay informed about security updates and patches provided by Mattermost to address and mitigate the vulnerability in your environment.