CVE-2019-15067
📋 TL;DR
An authentication bypass vulnerability in Smart Battery A2-25DE portable charger firmware allows attackers to gain privileged access by modifying the login page. This affects users of the Smart Battery A2-25DE portable charger with firmware version SECFS-2013-10-16-13:42:58-629c30ee-60c68be6 or earlier.
💻 Affected Systems
- Smart Battery A2-25DE multifunctional portable charger
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the device allowing unauthorized access to charging controls, potential physical damage to connected devices, and possible lateral movement to connected networks.
Likely Case
Unauthorized access to device management interface allowing configuration changes, monitoring of connected devices, and potential denial of service.
If Mitigated
Limited impact if device is isolated from networks and physical access is restricted.
🎯 Exploit Status
Authentication bypass via login page modification suggests simple exploitation requiring only web access to management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.twcert.org.tw/subpages/ServeThePublic/public_document_details.aspx?lang=en-US&id=44
Restart Required: No
Instructions:
No official patch available. Check vendor website for firmware updates. If update available, download and apply following manufacturer instructions.
🔧 Temporary Workarounds
Network Isolation
allIsolate device from untrusted networks and internet
Access Control
allRestrict network access to management interface using firewall rules
🧯 If You Can't Patch
- Disconnect device from networks when not in use
- Monitor network traffic to/from device for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check firmware version in device management interface. If version is SECFS-2013-10-16-13:42:58-629c30ee-60c68be6 or earlier, device is vulnerable.Check Version:
Access device web interface and check firmware version in settings/status pageVerify Fix Applied:
Verify firmware version has been updated to a version later than SECFS-2013-10-16-13:42:58-629c30ee-60c68be6📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to login page
- Multiple failed login attempts followed by successful access
- Configuration changes without proper authentication logs
Network Indicators:
- HTTP requests to device management interface from unexpected sources
- Traffic patterns suggesting authentication bypass attempts
SIEM Query:
source_ip=* AND dest_ip=<device_ip> AND (url_path CONTAINS "/login" OR url_path CONTAINS "/admin") AND http_status=200