CVE-2024-27181
📋 TL;DR
Apache Linkis versions up to 1.5.0 contain a privilege escalation vulnerability where trusted accounts can access token information they shouldn't have permission to view. This allows attackers with trusted account access to potentially compromise authentication tokens and escalate privileges. Organizations running Apache Linkis 1.5.0 or earlier are affected.
💻 Affected Systems
- Apache Linkis
📦 What is this software?
Linkis by Apache
⚠️ Risk & Real-World Impact
Worst Case
Attackers with trusted account access can steal authentication tokens, gain administrative privileges, compromise the entire Linkis deployment, and potentially access connected data systems.
Likely Case
Trusted users abuse their access to steal tokens, impersonate other users, and gain unauthorized access to sensitive data and system functions.
If Mitigated
With proper access controls and monitoring, impact is limited to token exposure requiring token rotation and user account review.
🎯 Exploit Status
Exploitation requires authenticated access as a trusted user, making it accessible to insiders or compromised accounts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.0
Vendor Advisory: https://lists.apache.org/thread/hosd73l7hxb3rpt5rb0yg0ld11zph4c6
Restart Required: Yes
Instructions:
1. Backup current configuration and data. 2. Download Apache Linkis 1.6.0 from official sources. 3. Stop Linkis services. 4. Deploy version 1.6.0 following upgrade documentation. 5. Restart services and verify functionality.
🔧 Temporary Workarounds
Restrict Trusted Account Access
allLimit the number of trusted accounts and implement strict access controls for basic management services.
Implement Token Monitoring
allMonitor token usage and implement alerts for unusual token access patterns.
🧯 If You Can't Patch
- Implement strict access controls to limit which users can access basic management services.
- Monitor and audit all token-related activities and implement automated token rotation policies.
🔍 How to Verify
Check if Vulnerable:
Check Linkis version via web interface or configuration files. If version is 1.5.0 or earlier, system is vulnerable.Check Version:
Check linkis.properties or web interface for version information.Verify Fix Applied:
Verify Linkis version is 1.6.0 or later and test that trusted accounts cannot access unauthorized token information.📡 Detection & Monitoring
Log Indicators:
- Unusual token access patterns
- Multiple token requests from single user
- Access to token endpoints by non-admin users
Network Indicators:
- Unusual API calls to token management endpoints
- Increased traffic to basic management services
SIEM Query:
source="linkis" AND (uri="/api/token*" OR uri="/api/basic*" OR message="token access")