CVE-2017-2738
📋 TL;DR
This CVE describes two vulnerabilities in Huawei VCM5010 video conferencing systems: an authentication bypass that allows unauthenticated attackers to access web pages, and an arbitrary file upload vulnerability that lets authenticated attackers upload malicious files. Systems running software versions earlier than V100R002C50SPC100 are affected, potentially allowing complete system compromise.
💻 Affected Systems
- Huawei VCM5010
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise leading to remote code execution, data theft, and use as a pivot point into internal networks
Likely Case
Unauthorized access to sensitive configuration data and potential malware deployment on affected systems
If Mitigated
Limited to denial of service or information disclosure if network segmentation and access controls are properly implemented
🎯 Exploit Status
Authentication bypass allows unauthenticated access, making exploitation straightforward once the bypass method is known
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V100R002C50SPC100 or later
Vendor Advisory: http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170329-01-vcm-en
Restart Required: Yes
Instructions:
1. Download V100R002C50SPC100 or later firmware from Huawei support portal. 2. Backup current configuration. 3. Upload and install new firmware via web interface or console. 4. Reboot system. 5. Restore configuration if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate VCM5010 systems from untrusted networks and restrict access to management interfaces
Access Control Lists
allImplement firewall rules to restrict HTTP/HTTPS access to management interface from trusted IPs only
🧯 If You Can't Patch
- Segment the device on a dedicated VLAN with strict firewall rules allowing only necessary traffic
- Disable web management interface if not required and use console/SSH access only with strong authentication
🔍 How to Verify
Check if Vulnerable:
Check web interface version at /login page or via console using 'display version' commandCheck Version:
display version | include VCM5010Verify Fix Applied:
Verify firmware version is V100R002C50SPC100 or later and test authentication bypass attempts fail📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful access
- Unusual file uploads to web interface
- Access from unexpected IP addresses
Network Indicators:
- HTTP requests with crafted authentication bypass parameters
- Unusual file upload traffic to management interface
SIEM Query:
source="vcm5010" AND (event="authentication_failure" OR event="file_upload")