CVE-2023-40460
📋 TL;DR
This vulnerability in Sierra Wireless ALEOS ACEManager allows authenticated users to upload files without proper validation, potentially executing client-side scripts. This could alter device functionality until restart. Affects ALEOS 4.16 and earlier versions.
💻 Affected Systems
- Sierra Wireless ALEOS
📦 What is this software?
Aleos by Sierrawireless
⚠️ Risk & Real-World Impact
Worst Case
Authenticated attacker could execute malicious scripts to modify device configuration, disrupt services, or potentially gain persistent access until device restart.
Likely Case
Authenticated user could upload malicious files causing temporary disruption of ACEManager functionality or unauthorized configuration changes.
If Mitigated
With proper access controls and monitoring, impact limited to temporary service disruption requiring device restart.
🎯 Exploit Status
Exploitation requires authenticated access and knowledge of ACEManager interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ALEOS 4.17 or later
Vendor Advisory: https://source.sierrawireless.com/resources/security-bulletins/sierra-wireless-technical-bulletin---swi-psa-2023-006/
Restart Required: Yes
Instructions:
1. Download ALEOS 4.17 or later from Sierra Wireless support portal. 2. Backup current configuration. 3. Apply firmware update via ACEManager or console. 4. Restart device. 5. Verify version and functionality.
🔧 Temporary Workarounds
Restrict ACEManager Access
allLimit ACEManager access to trusted networks and users only
Implement File Upload Restrictions
allConfigure network firewall or WAF to block suspicious file uploads to ACEManager
🧯 If You Can't Patch
- Restrict ACEManager access to minimum necessary users and networks
- Implement monitoring for unusual file upload activities and configuration changes
🔍 How to Verify
Check if Vulnerable:
Check ALEOS version via ACEManager web interface or CLI: show versionCheck Version:
show versionVerify Fix Applied:
Verify version is 4.17 or later and test file upload functionality📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to ACEManager
- Unexpected configuration changes
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- HTTP POST requests to ACEManager upload endpoints with unusual file types
- Traffic from unexpected sources to ACEManager
SIEM Query:
source="ACEManager" AND (event="file_upload" OR event="config_change")