CVE-2024-52593
📋 TL;DR
This vulnerability in Misskey allows attackers to manipulate 'origin' links in notes and user profiles to point to arbitrary HTTPS URLs, even on different domains. This enables phishing attacks where users may be tricked into clicking malicious links. All Misskey instances running affected versions are vulnerable.
💻 Affected Systems
- Misskey
📦 What is this software?
Misskey by Misskey
Misskey by Misskey
Misskey by Misskey
Misskey by Misskey
⚠️ Risk & Real-World Impact
Worst Case
Widespread phishing campaigns targeting federated social media users, credential theft, malware distribution through trusted-looking links.
Likely Case
Targeted phishing attacks against specific users or communities, reputation damage to vulnerable instances.
If Mitigated
Minimal impact if users are trained to verify URLs before clicking, but phishing risk remains.
🎯 Exploit Status
Exploitation requires ability to create notes or modify user profiles, but the vulnerability itself is simple to exploit once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024.11.0-alpha.3
Vendor Advisory: https://github.com/misskey-dev/misskey/security/advisories/GHSA-675w-hf2m-qwmj
Restart Required: Yes
Instructions:
1. Backup your Misskey instance. 2. Update to version 2024.11.0-alpha.3 or later. 3. Restart the Misskey service. 4. Verify the update was successful.
🧯 If You Can't Patch
- Implement strict URL filtering at network perimeter to block suspicious domains.
- Educate users about phishing risks and URL verification.
🔍 How to Verify
Check if Vulnerable:
Check if your Misskey version is earlier than 2024.11.0-alpha.3.Check Version:
Check Misskey admin panel or package manager for version information.Verify Fix Applied:
Confirm version is 2024.11.0-alpha.3 or later and test that origin links are properly validated.📡 Detection & Monitoring
Log Indicators:
- Unusual patterns of note creation or profile updates with external URLs.
- User reports of suspicious links in notes or profiles.
Network Indicators:
- Outbound connections to unexpected domains when clicking origin links.
SIEM Query:
Search for: 'NoteCreateService.insertNote' OR 'ApPersonService.createPerson' OR 'ApPersonService.updatePerson' with URL parameters