CVE-2024-53351
📋 TL;DR
Insecure permissions in PipeCD v0.49 allow attackers to access the service account's authentication token, enabling privilege escalation within the PipeCD environment. This affects all organizations running vulnerable PipeCD deployments, particularly those in multi-tenant or shared environments.
💻 Affected Systems
- PipeCD
📦 What is this software?
Pipecd by Linuxfoundation
⚠️ Risk & Real-World Impact
Worst Case
Full compromise of the PipeCD control plane, allowing attackers to deploy malicious applications, modify existing deployments, access sensitive credentials, and potentially pivot to connected infrastructure.
Likely Case
Unauthorized access to deployment pipelines, ability to modify or disrupt deployments, and potential access to connected cloud provider credentials.
If Mitigated
Limited impact with proper network segmentation and minimal service account permissions, though token exposure still represents a significant security risk.
🎯 Exploit Status
Exploitation requires some level of access to the PipeCD environment but the actual token extraction is straightforward once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.50.0 or later
Vendor Advisory: https://github.com/pipe-cd/pipecd/releases/tag/v0.50.0
Restart Required: Yes
Instructions:
1. Backup current PipeCD configuration and data. 2. Update PipeCD to version v0.50.0 or later using your deployment method (Helm, kubectl apply, etc.). 3. Restart all PipeCD components. 4. Verify the update was successful.
🔧 Temporary Workarounds
Restrict Service Account Permissions
allApply principle of least privilege to the PipeCD service account to limit potential damage if token is compromised
kubectl create role pipecd-limited --verb=get,list,watch --resource=pods,deployments
kubectl create rolebinding pipecd-limited-binding --role=pipecd-limited --serviceaccount=default:pipecd-service-account
Network Segmentation
allIsolate PipeCD components from sensitive systems and limit network access
kubectl apply -f network-policy.yaml # Create NetworkPolicy restricting PipeCD pod communications
🧯 If You Can't Patch
- Implement strict network segmentation to isolate PipeCD from other critical systems
- Rotate all service account tokens and credentials used by PipeCD immediately
🔍 How to Verify
Check if Vulnerable:
Check PipeCD version: kubectl get deployment pipecd -o jsonpath='{.spec.template.spec.containers[0].image}' | grep -o 'v0\.49'Check Version:
kubectl get deployment pipecd -o jsonpath='{.spec.template.spec.containers[0].image}'Verify Fix Applied:
Verify version is v0.50.0 or later: kubectl get deployment pipecd -o jsonpath='{.spec.template.spec.containers[0].image}'📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to service account token endpoints
- Unusual API calls from PipeCD service account
- Failed authentication attempts followed by successful privileged operations
Network Indicators:
- Unusual outbound connections from PipeCD pods to cloud provider APIs
- Traffic patterns indicating token exfiltration
SIEM Query:
source="pipecd" AND (event="token_access" OR event="unauthorized_api_call")