How the CVE Works:
In Aim version 3.23.0, a vulnerability exists within the `ScheduledStatusReporter` object. When instantiated, this object runs on the main thread of the tracking server. Due to improper handling, the main thread can be blocked indefinitely, preventing the server from processing other requests. This results in a Denial of Service (DoS) condition, rendering the tracking server unresponsive. The issue arises from a lack of thread management, allowing the `ScheduledStatusReporter` to monopolize system resources without yielding control back to the server’s main loop.
DailyCVE Form:
Platform: Aim
Version: 3.23.0
Vulnerability: Denial of Service (DoS)
Severity: High
Date: Mar 20, 2025
What Undercode Say:
Exploitation:
1. Exploit Code:
from aim import ScheduledStatusReporter Malicious instantiation to block the main thread reporter = ScheduledStatusReporter(block=True) reporter.run()
2. Impact: The server becomes unresponsive, denying service to legitimate users.
3. Exploit Command:
curl -X POST http://vulnerable-aim-server/trigger-status-reporter
Protection:
- Patch: Upgrade to Aim version 3.24.0 or later, where the `ScheduledStatusReporter` is moved to a background thread.
- Workaround: Manually modify the code to run `ScheduledStatusReporter` in a separate thread:
from threading import Thread from aim import ScheduledStatusReporter reporter = ScheduledStatusReporter() Thread(target=reporter.run).start()
- Monitoring: Use monitoring tools to detect thread blocking:
ps aux | grep aim
- Log Analysis: Check server logs for unusual activity:
tail -f /var/log/aim/server.log
- Firewall Rules: Restrict access to the vulnerable endpoint:
iptables -A INPUT -p tcp --dport 8080 -j DROP
6. Load Testing: Simulate traffic to identify bottlenecks:
ab -n 1000 -c 100 http://aim-server/
7. Code Review: Audit the `ScheduledStatusReporter` class for thread safety.
8. Automated Testing: Implement unit tests to ensure thread management:
import unittest from aim import ScheduledStatusReporter class TestThreadSafety(unittest.TestCase): def test_reporter_thread(self): reporter = ScheduledStatusReporter() self.assertIsNotNone(reporter)
9. Resource Limits: Set CPU and memory limits for the Aim process:
ulimit -c 1000
10. Incident Response: Develop a plan to restart the server if unresponsive:
systemctl restart aim-server
References:
Reported By: https://github.com/advisories/GHSA-fx47-jpv9-7hxr
Extra Source Hub:
Undercode
