CVE-2021-46701
📋 TL;DR
CVE-2021-46701 is a WebSocket transport vulnerability in PreMiD 2.2.0 that allows unauthorized access to socket events. Attackers can intercept and manipulate Discord 'now playing' status updates, potentially spoofing or interfering with a victim's media activity display. This affects users running the vulnerable PreMiD version with Discord integration enabled.
💻 Affected Systems
- PreMiD
📦 What is this software?
Premid by Premid
⚠️ Risk & Real-World Impact
Worst Case
An attacker could manipulate a victim's Discord status to display inappropriate content, potentially causing reputational damage or social engineering attacks against the victim's contacts.
Likely Case
Attackers interfere with Discord status updates, causing incorrect 'now playing' information or temporary disruption of the PreMiD service.
If Mitigated
With proper network segmentation and updated software, impact is limited to potential minor annoyance from status display issues.
🎯 Exploit Status
Exploitation requires network access to the victim's PreMiD WebSocket endpoint. Proof of concept exists in GitHub issues.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.1 and later
Vendor Advisory: https://github.com/PreMiD/PreMiD/issues/790
Restart Required: Yes
Instructions:
1. Open PreMiD application. 2. Check for updates in settings or allow auto-update. 3. Restart PreMiD after update completes. 4. Verify version is 2.2.1 or higher.
🔧 Temporary Workarounds
Disable PreMiD
allTemporarily disable PreMiD application to prevent exploitation
Close PreMiD application from system tray/notification area
Network Isolation
allBlock WebSocket connections to PreMiD from untrusted networks
Configure firewall to block external connections to PreMiD WebSocket port
🧯 If You Can't Patch
- Disable PreMiD Discord integration in settings
- Use PreMiD only on trusted, isolated networks
🔍 How to Verify
Check if Vulnerable:
Check PreMiD version in application settings. If version is exactly 2.2.0, system is vulnerable.Check Version:
PreMiD shows version in application settings interface (no CLI command available)Verify Fix Applied:
Verify PreMiD version is 2.2.1 or higher in application settings.📡 Detection & Monitoring
Log Indicators:
- Unexpected WebSocket connection attempts to PreMiD
- Unusual Discord status update patterns
Network Indicators:
- Unauthorized WebSocket traffic to PreMiD default port
- Suspicious WebSocket message patterns
SIEM Query:
websocket AND (premid OR discord) AND (unauthorized OR unexpected)