Mastodon SSRF Bypass and Incorrect Privilege Execution Fix Guide

Vulnerability Overview In Mastodon version v4.4.21, the following security issues exist: 1. Incorrect Permission Assignment (GHSA-7xw-ffmg-wp4w) 2. Bypass of SSRF protection via IPv4-compatible IPv6 addresses (GHSA-vwhj-3p83-v279) Scope of Impact Incorrect Permission Assignment: May allow unauthorized users to perform certain operations. Bypass of SSRF protection via IPv4-compatible IPv6 addresses: May lead to Server-Side Request Forgery (SSRF) attacks, allowing attackers to exploit this vulnerability to access internal network resources. Remediation 1. Remediation for Incorrect Permission Assignment: - Specific remediation measures were not detailed on the page; however, upgrading to the latest version is recommended to obtain the fix. 2. Remediation for Bypass of SSRF protection via IPv4-compatible IPv6 addresses: - Similarly, specific remediation measures were not detailed on the page; however, upgrading to the latest version is recommended to obtain the fix. Upgrade Steps Obtain the code for version v4.4.21: Ensure a database backup is performed before upgrading: When upgrading directly from an earlier version, carefully read the upgrade instructions for skipped versions, as they may require additional steps such as database migrations. It is particularly important to read the release notes for version 4.4.0. Non-Docker Environment If you encounter issues building the gem on certain systems, try the following command: Install dependencies: Restart all Mastodon processes. Docker Environment Restart all Mastodon processes. Contributors ClearlyClaire and shleeable Assets No specific asset information provided. The above summarizes the key vulnerability information for Mastodon version v4.4.21. It is recommended to upgrade to the latest version as soon as possible to ensure system security.

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Mastodon SSRF Bypass and Incorrect Privilege Execution Fix Guide

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