CVE-2021-1470
📋 TL;DR
This SQL injection vulnerability in Cisco SD-WAN vManage allows authenticated attackers to execute malicious SQL queries against the database. It affects organizations using vulnerable versions of Cisco SD-WAN vManage software. Successful exploitation could lead to data manipulation or unauthorized access to the underlying system.
💻 Affected Systems
- Cisco SD-WAN vManage
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full control of the vManage database, modifies configuration data, extracts sensitive information, or executes commands on the underlying operating system.
Likely Case
Attacker modifies network configurations, disrupts SD-WAN operations, or extracts sensitive network topology and credential information.
If Mitigated
With proper network segmentation and authentication controls, impact is limited to the vManage application layer with no lateral movement.
🎯 Exploit Status
Requires valid credentials but SQL injection is a well-known attack vector with many available tools
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20.3.4, 20.4.2, 20.5.1 or later
Vendor Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-sqlinj-HDJUeEAX
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Download appropriate patch from Cisco Software Center. 3. Apply patch following Cisco SD-WAN upgrade procedures. 4. Verify successful upgrade and functionality.
🧯 If You Can't Patch
- Restrict network access to vManage interface to trusted IPs only
- Implement strict authentication controls and monitor for suspicious SQL queries
🔍 How to Verify
Check if Vulnerable:
Check vManage version via CLI: show version | include vManageCheck Version:
show version | include vManageVerify Fix Applied:
Verify version is 20.3.4, 20.4.2, 20.5.1 or later and test SQL injection attempts are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in vManage logs
- Multiple failed authentication attempts followed by SQL-like queries
- Database error messages containing SQL syntax
Network Indicators:
- Unusual database connection patterns from vManage interface
- SQL injection payloads in HTTP POST requests to vManage
SIEM Query:
source="vmanage" AND ("sql" OR "database" OR "injection") AND ("error" OR "malformed" OR "syntax")🔗 References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-sqlinj-HDJUeEAX
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vman-auth-bypass-Z3Zze5XC
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-cql-inject-c7z9QqyB
