CVE-2022-46763
📋 TL;DR
This SQL injection vulnerability in TrueConf Server allows low-privileged database users to execute arbitrary SQL commands with database administrator privileges. This can lead to arbitrary code execution on the server. Affects TrueConf Server version 5.2.0.10225 and potentially earlier versions.
💻 Affected Systems
- TrueConf Server
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the TrueConf Server with full administrative control, data exfiltration, and potential lateral movement to other systems.
Likely Case
Database compromise leading to data theft, privilege escalation, and potential RCE on the server.
If Mitigated
Limited impact if proper network segmentation and database user privilege restrictions are in place.
🎯 Exploit Status
Exploitation requires database user credentials but SQL injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.2.6
Vendor Advisory: https://solidlab.ru/our-news/145-trueconf.html
Restart Required: Yes
Instructions:
1. Download TrueConf Server version 5.2.6 or later from the official vendor website. 2. Backup your current configuration and database. 3. Install the updated version following vendor instructions. 4. Restart the TrueConf Server service.
🔧 Temporary Workarounds
Restrict Database User Privileges
allLimit database user permissions to prevent execution of arbitrary SQL commands.
REVOKE EXECUTE ON [vulnerable_function] FROM [low_privilege_user];
ALTER USER [low_privilege_user] WITH NOSUPERUSER;
Network Segmentation
linuxIsolate TrueConf Server database from untrusted networks.
iptables -A INPUT -p tcp --dport 5432 -s [trusted_ips] -j ACCEPT
iptables -A INPUT -p tcp --dport 5432 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit database connections to trusted hosts only.
- Monitor database logs for unusual SQL query patterns and implement database activity monitoring.
🔍 How to Verify
Check if Vulnerable:
Check TrueConf Server version via web interface or configuration files. If version is 5.2.0.10225 or earlier, system is vulnerable.Check Version:
On Linux: cat /opt/trueconf/version.txt or check web interface. On Windows: Check program files directory or registry.Verify Fix Applied:
Verify version is 5.2.6 or later and test database user permissions are properly restricted.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries from low-privileged users
- Database privilege escalation attempts
- Execution of administrative SQL commands
Network Indicators:
- Unusual database connection patterns
- SQL injection payloads in database traffic
SIEM Query:
source="database_logs" AND ("GRANT" OR "ALTER USER" OR "EXECUTE" OR suspicious_sql_patterns)🔗 References
- https://github.com/sldlb/public_cve_submissions/blob/main/CVE-2022-46763.txt
- https://solidlab.ru/our-news/145-trueconf.html
- https://vuldb.com/?diff.216851
- https://github.com/sldlb/public_cve_submissions/blob/main/CVE-2022-46763.txt
- https://solidlab.ru/our-news/145-trueconf.html
- https://vuldb.com/?diff.216851
