CVE-2024-29866
📋 TL;DR
This vulnerability allows Project Owners or Organization Owners in Datalust Seq to escalate their privileges to System-level access, bypassing intended access controls. Attackers with these lower-level roles can gain full administrative control over the Seq logging platform. All Seq instances running affected versions are vulnerable.
💻 Affected Systems
- Datalust Seq
📦 What is this software?
Seq by Datalust
Seq by Datalust
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Seq instance allowing attackers to view, modify, or delete all log data, manipulate system configurations, and potentially pivot to other systems in the environment.
Likely Case
Unauthorized users gaining administrative access to manipulate logging data, create backdoors, or disrupt logging operations.
If Mitigated
Limited impact if proper network segmentation and role-based access controls are already limiting exposure of Seq instances.
🎯 Exploit Status
Exploitation requires authenticated access as a Project Owner or Organization Owner. The privilege escalation mechanism is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2023.4.11151 or 2024.1.11146
Vendor Advisory: https://datalust.co
Restart Required: Yes
Instructions:
1. Backup your Seq configuration and data. 2. Upgrade to Seq version 2023.4.11151 (for 2023.x) or 2024.1.11146 (for 2024.x). 3. Restart the Seq service. 4. Verify the upgrade was successful.
🔧 Temporary Workarounds
Temporary Role Restriction
allTemporarily remove Project Owner and Organization Owner roles from all users until patching can be completed.
# Use Seq administrative interface to modify user roles
# Remove 'Project Owner' and 'Organization Owner' assignments
🧯 If You Can't Patch
- Isolate Seq instances from internet access and restrict internal network access to only necessary administrative users.
- Implement strict monitoring of user role changes and privilege escalation attempts in Seq audit logs.
🔍 How to Verify
Check if Vulnerable:
Check your Seq version via the web interface (Settings → About) or API endpoint /api/setup/about.Check Version:
curl -s http://your-seq-instance/api/setup/about | grep -o '"version":"[^"]*"'Verify Fix Applied:
Confirm version is 2023.4.11151 or higher (for 2023.x) OR 2024.1.11146 or higher (for 2024.x). Test that Project Owners cannot access System-level functions.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- User role changes to System Administrator
- Access to administrative endpoints by non-admin users
Network Indicators:
- Unusual API calls to privilege-related endpoints from non-admin IPs
SIEM Query:
source="seq" AND (event="UserRoleChanged" OR event="PrivilegeEscalation" OR endpoint="/api/users/*/roles")