CVE-2024-25388
📋 TL;DR
This vulnerability in RT-Thread RTOS involves an integer signedness error in the WLAN management driver that leads to a buffer overflow. Attackers can exploit this to execute arbitrary code or cause denial-of-service on affected embedded systems. Any device running RT-Thread RTOS with WLAN functionality is potentially affected.
💻 Affected Systems
- RT-Thread Real-Time Operating System
📦 What is this software?
Rt Thread by Rt Thread
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, allowing attackers to take control of the device, exfiltrate data, or pivot to other network segments.
Likely Case
Denial-of-service causing system crashes or instability, potentially requiring physical intervention to restore functionality.
If Mitigated
Limited impact if proper network segmentation and access controls prevent unauthorized access to vulnerable interfaces.
🎯 Exploit Status
Proof-of-concept details are publicly available in security advisories. Exploitation requires sending specially crafted packets to the WLAN interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.0.3 or later
Vendor Advisory: https://github.com/RT-Thread/rt-thread/issues/8285
Restart Required: Yes
Instructions:
1. Update RT-Thread to version 5.0.3 or later. 2. Recompile and redeploy the firmware. 3. Restart affected devices.
🔧 Temporary Workarounds
Disable WLAN functionality
allTemporarily disable wireless networking if not required
Modify RT-Thread configuration to disable WLAN support
Network segmentation
allIsolate affected devices from untrusted networks
🧯 If You Can't Patch
- Implement strict network access controls to limit who can communicate with WLAN interfaces
- Deploy intrusion detection systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check RT-Thread version and verify WLAN functionality is enabled. Versions 5.0.2 and earlier are vulnerable.Check Version:
Check RT-Thread version in system configuration or via RT-Thread shell commandsVerify Fix Applied:
Verify RT-Thread version is 5.0.3 or later and test WLAN functionality for stability.📡 Detection & Monitoring
Log Indicators:
- System crashes
- Memory corruption errors
- Unexpected WLAN driver behavior
Network Indicators:
- Unusual WLAN traffic patterns
- Malformed network packets to WLAN interfaces
SIEM Query:
Search for: 'RT-Thread crash' OR 'WLAN driver error' OR memory corruption alerts🔗 References
- http://www.openwall.com/lists/oss-security/2024/03/05/1
- https://github.com/RT-Thread/rt-thread/issues/8285
- https://github.com/hnsecurity/vulns/blob/main/HNS-2024-05-rt-thread.txt
- https://seclists.org/fulldisclosure/2024/Mar/28
- https://security.humanativaspa.it/multiple-vulnerabilities-in-rt-thread-rtos/
- http://seclists.org/fulldisclosure/2024/Mar/28
- http://www.openwall.com/lists/oss-security/2024/03/05/1
- https://github.com/RT-Thread/rt-thread/issues/8285
- https://github.com/hnsecurity/vulns/blob/main/HNS-2024-05-rt-thread.txt
- https://seclists.org/fulldisclosure/2024/Mar/28
- https://security.humanativaspa.it/multiple-vulnerabilities-in-rt-thread-rtos/
