CVE-2025-66524
📋 TL;DR
This vulnerability allows remote code execution on Apache NiFi systems through unsafe Java deserialization in the GetAsanaObject Processor. Attackers can exploit it by injecting malicious objects into the configured cache server, potentially taking full control of affected systems. Only systems running Apache NiFi with the GetAsanaObject Processor enabled and accessible cache servers are vulnerable.
💻 Affected Systems
- Apache NiFi
📦 What is this software?
Nifi by Apache
Nifi by Apache
Nifi by Apache
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing arbitrary code execution, data theft, and lateral movement within the network.
Likely Case
Remote code execution leading to service disruption, data exfiltration, or installation of persistent backdoors.
If Mitigated
Limited impact if cache server access is restricted and network segmentation prevents exploitation.
🎯 Exploit Status
Exploitation requires direct access to the configured cache server but no authentication to NiFi itself. Java deserialization exploits are well-documented and weaponization is likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apache NiFi 2.7.0
Vendor Advisory: https://lists.apache.org/thread/k9h004ydjg7opdvxr0nfywtzf33z60d7
Restart Required: Yes
Instructions:
1. Download Apache NiFi 2.7.0 from official sources. 2. Stop NiFi service. 3. Backup configuration and data. 4. Install new version. 5. Restart NiFi service. 6. Verify version and functionality.
🔧 Temporary Workarounds
Remove GetAsanaObject Processor
allDisable or remove the vulnerable processor from the nifi-asana-processors-nar bundle
Remove or disable nifi-asana-processors-nar bundle from NiFi installation
Restrict Cache Server Access
allImplement network controls to limit access to the Distribute Map Cache Client Service
Configure firewall rules to restrict cache server access to trusted IPs only
🧯 If You Can't Patch
- Disable GetAsanaObject Processor and remove nifi-asana-processors-nar bundle
- Implement strict network segmentation and access controls for cache servers
🔍 How to Verify
Check if Vulnerable:
Check if NiFi version is between 1.20.0 and 2.6.0 AND GetAsanaObject Processor is enabled in configurationCheck Version:
nifi.sh status | grep Version or check NiFi web interfaceVerify Fix Applied:
Verify NiFi version is 2.7.0 or higher AND GetAsanaObject Processor uses JSON serialization📡 Detection & Monitoring
Log Indicators:
- Unusual Java deserialization errors
- Suspicious cache server connections
- GetAsanaObject Processor activity anomalies
Network Indicators:
- Unusual traffic to cache server ports
- Malformed serialized objects in network traffic
SIEM Query:
source="nifi" AND ("GetAsanaObject" OR "deserialization" OR "cache server")