CVE-2015-7841
📋 TL;DR
This vulnerability allows remote attackers to bypass authentication on Huawei FusionServer rack server login pages and execute arbitrary commands via unspecified parameters. It affects multiple Huawei server models with outdated firmware versions. Attackers can gain unauthorized access and control over affected systems.
💻 Affected Systems
- Huawei FusionServer RH2288 V3
- RH2288H V3
- XH628 V3
- RH1288 V3
- RH2288A V2
- RH1288A V2
- RH8100 V3
- CH222 V3
- CH220 V3
- CH121 V3
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, create unauthorized users, access sensitive data, and potentially pivot to other network systems.
Likely Case
Unauthorized access to server management interface leading to configuration changes, data theft, or installation of backdoors.
If Mitigated
Limited impact if servers are isolated, have strict network controls, and monitoring detects authentication anomalies.
🎯 Exploit Status
The vulnerability allows command injection via login page parameters without authentication. While no public PoC is documented, the description suggests straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V100R003C00SPC603 for RH2288 V3, V100R003C00SPC503 for RH2288H V3, V100R003C00SPC602 for XH628 V3 and RH1288 V3, V100R002C00SPC701 for RH2288A V2, V100R002C00SPC502 for RH1288A V2, V100R003C00SPC110 for RH8100 V3, V100R001C00SPC161 for CH222 V3, CH220 V3, and CH121 V3
Vendor Advisory: http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-454418.htm
Restart Required: Yes
Instructions:
1. Download appropriate firmware update from Huawei support portal. 2. Backup current configuration. 3. Apply firmware update via management interface or local console. 4. Reboot server to complete installation. 5. Verify firmware version after reboot.
🔧 Temporary Workarounds
Network Isolation
linuxRestrict access to server management interfaces to trusted IP addresses only
iptables -A INPUT -p tcp --dport 443 -s trusted_ip_range -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable Web Interface
linuxTemporarily disable web-based management interface if not required
systemctl stop httpd
systemctl disable httpd
🧯 If You Can't Patch
- Isolate affected servers in separate VLAN with strict firewall rules
- Implement network-based intrusion detection to monitor for command injection attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version via management interface or CLI command 'display version' and compare with patched versions listed in CVECheck Version:
display versionVerify Fix Applied:
Verify firmware version matches or exceeds patched versions listed in fix information📡 Detection & Monitoring
Log Indicators:
- Unusual login attempts with command-like parameters
- Successful logins from unexpected IP addresses
- User creation events outside normal administrative hours
Network Indicators:
- HTTP POST requests to login page containing command injection patterns
- Unusual outbound connections from server management interface
SIEM Query:
source="huawei_server" AND (url="*/login*" AND (param="*;*" OR param="*|*" OR param="*`*"))