CVE-2023-22378
📋 TL;DR
This CVE describes a blind SQL injection vulnerability in Nozomi Networks Guardian and CMC products. Authenticated attackers can execute arbitrary SQL statements due to improper input validation in the sorting parameter, potentially extracting data, altering database structure, or affecting availability. Only authenticated users with access to the web interface are affected.
💻 Affected Systems
- Nozomi Networks Guardian
- Nozomi Networks CMC
📦 What is this software?
Cmc by Nozominetworks
Guardian by Nozominetworks
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the database including data exfiltration, data manipulation, database structure alteration, and potential denial of service affecting the entire Nozomi Networks monitoring system.
Likely Case
Unauthorized data extraction from the database, potentially exposing sensitive network monitoring data, configuration information, and credential hashes.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only allowing data extraction from specific tables if least privilege is implemented.
🎯 Exploit Status
Exploitation requires authenticated access but SQL injection is typically straightforward once authenticated; blind SQL injection may require more sophisticated techniques
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to vendor advisory NN-2023:2-01 for specific patched versions
Vendor Advisory: https://security.nozominetworks.com/NN-2023:2-01
Restart Required: Yes
Instructions:
1. Review vendor advisory NN-2023:2-01. 2. Download appropriate patch from Nozomi Networks support portal. 3. Apply patch following vendor instructions. 4. Restart affected services or appliances as required.
🔧 Temporary Workarounds
Input Validation Enhancement
allImplement additional input validation for sorting parameters at the application layer
Not applicable - requires code changes
Database Permission Restriction
allApply least privilege principles to database user accounts used by the application
Database-specific commands vary by DBMS
🧯 If You Can't Patch
- Implement strict input validation at web application firewall (WAF) level for sorting parameters
- Restrict network access to Nozomi Networks web interface to only authorized users and networks
🔍 How to Verify
Check if Vulnerable:
Test sorting parameters with SQL injection payloads (ethical testing only with authorization)Check Version:
Check version through Nozomi Networks web interface or appliance management consoleVerify Fix Applied:
Verify patch version matches vendor advisory and retest sorting parameters with SQL injection payloads📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by sorting parameter manipulation
- Unexpected database errors in application logs
Network Indicators:
- Unusual patterns in HTTP requests to sorting endpoints
- Excessive database traffic from application server
SIEM Query:
source="nozomi_web_logs" AND (url="*sort*" OR param="*sort*") AND (payload="*' OR *" OR payload="*;--*" OR payload="*UNION*" OR payload="*SELECT*" OR payload="*FROM*" OR payload="*WHERE*")