CVE-2023-52969
📋 TL;DR
This vulnerability in MariaDB Server can cause the database to crash under certain conditions, potentially leading to denial of service. The crash occurs during query optimization stages and affects MariaDB versions 10.4 through 11.0. Database administrators running affected versions should prioritize patching.
💻 Affected Systems
- MariaDB Server
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete database unavailability leading to application downtime and data inaccessibility until service is restored.
Likely Case
Intermittent database crashes causing service disruptions and requiring manual restart of MariaDB processes.
If Mitigated
Minimal impact with proper monitoring and automated recovery procedures in place.
🎯 Exploit Status
Exploitation requires triggering specific query optimization conditions. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: MariaDB 10.4.32, 10.5.23, 10.6.15, 10.7.8, 10.8.7, 10.9.6, 10.10.5, 10.11.4, 11.0.3
Vendor Advisory: https://jira.mariadb.org/browse/MDEV-32083
Restart Required: Yes
Instructions:
1. Check current MariaDB version. 2. Backup databases and configuration. 3. Update MariaDB to patched version using your distribution's package manager. 4. Restart MariaDB service. 5. Verify version and functionality.
🔧 Temporary Workarounds
Query optimization monitoring
allMonitor and log complex queries that trigger optimization stages to identify potential crash triggers.
SET GLOBAL slow_query_log = 'ON';
SET GLOBAL long_query_time = 2;
🧯 If You Can't Patch
- Implement database monitoring with automatic restart capabilities
- Configure load balancing with failover to redundant database instances
🔍 How to Verify
Check if Vulnerable:
Check MariaDB version against affected ranges: SELECT VERSION();Check Version:
SELECT VERSION(); or mariadb --versionVerify Fix Applied:
Verify version is at or above patched versions: SELECT VERSION();📡 Detection & Monitoring
Log Indicators:
- Empty backtrace logs
- Unexpected MariaDB crashes
- Segmentation fault errors in logs
Network Indicators:
- Sudden loss of database connectivity
- Connection timeouts to MariaDB
SIEM Query:
source="mariadb.log" AND ("segmentation fault" OR "backtrace" OR "crash")