CVE-2024-52506
📋 TL;DR
This vulnerability in Graylog's reporting functionality allows authorized users to potentially access other users' reports when multiple concurrent report rendering requests occur. This could leak log messages or aggregated data that users shouldn't have access to. Affects Graylog 6.1.0 and 6.1.1 installations with reporting enabled.
💻 Affected Systems
- Graylog
📦 What is this software?
Graylog by Graylog
⚠️ Risk & Real-World Impact
Worst Case
Sensitive log data containing PII, credentials, or proprietary information is exposed to unauthorized users, leading to data breaches and compliance violations.
Likely Case
Users accidentally receive reports intended for other users, potentially exposing internal operational data or limited sensitive information.
If Mitigated
With proper access controls and monitoring, impact is limited to minor data leakage between users with similar access levels.
🎯 Exploit Status
Exploitation requires authenticated access and precise timing of concurrent requests to trigger the race condition.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.1.2
Vendor Advisory: https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-vggm-3478-vm5m
Restart Required: Yes
Instructions:
1. Backup Graylog configuration and data. 2. Stop Graylog service. 3. Upgrade to Graylog 6.1.2 using your package manager or installation method. 4. Restart Graylog service. 5. Verify version and functionality.
🔧 Temporary Workarounds
Disable Reporting Functionality
allCompletely disable the reporting feature to prevent exploitation.
Edit Graylog configuration to disable reporting or remove reporting permissions from all users
🧯 If You Can't Patch
- Restrict reporting permissions to minimal set of trusted users only.
- Implement monitoring for unusual concurrent report generation patterns.
🔍 How to Verify
Check if Vulnerable:
Check Graylog version via web interface or configuration files. If version is 6.1.0 or 6.1.1, system is vulnerable.Check Version:
grep version /etc/graylog/server/server.conf or check Graylog web interface System → OverviewVerify Fix Applied:
After patching, verify version shows 6.1.2 or higher and test report generation functionality.📡 Detection & Monitoring
Log Indicators:
- Multiple concurrent report generation requests from same user
- Report generation errors with timing-related messages
- Users accessing reports they shouldn't have permissions for
Network Indicators:
- Unusual patterns of simultaneous API calls to reporting endpoints
SIEM Query:
source="graylog" AND ("report" AND "concurrent" OR "render" AND "multiple")