CVE-2019-3793
📋 TL;DR
CVE-2019-3793 is a critical vulnerability in Pivotal Apps Manager where the invitation service uses unencrypted HTTP instead of HTTPS. This allows unauthenticated attackers on the same network to intercept credentials used for invitation requests. Affected versions are Pivotal Apps Manager releases 665.0.x before 665.0.28, 666.0.x before 666.0.21, and 667.0.x before 667.0.7.
💻 Affected Systems
- Pivotal Apps Manager
📦 What is this software?
Application Service by Pivotal Software
Application Service by Pivotal Software
Application Service by Pivotal Software
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative credentials, leading to complete compromise of the Pivotal Apps Manager instance and potentially the underlying Pivotal Cloud Foundry platform.
Likely Case
Attackers intercept invitation credentials, allowing them to create unauthorized user accounts, access sensitive application data, or escalate privileges within the platform.
If Mitigated
With proper network segmentation and monitoring, impact is limited to credential exposure requiring immediate rotation and investigation.
🎯 Exploit Status
Exploitation requires network access to intercept unencrypted HTTP traffic. No authentication needed to observe network traffic.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 665.0.28, 666.0.21, or 667.0.7
Vendor Advisory: https://pivotal.io/security/cve-2019-3793
Restart Required: Yes
Instructions:
1. Upgrade Pivotal Apps Manager to version 665.0.28, 666.0.21, or 667.0.7 or higher. 2. Restart the Apps Manager service. 3. Verify the invitation service now uses HTTPS.
🔧 Temporary Workarounds
Force HTTPS for invitation service
allConfigure network rules or application settings to force HTTPS for all invitation service communications
Configure load balancer or reverse proxy to redirect HTTP to HTTPS for invitation endpoints
Network segmentation
allIsolate Apps Manager network to prevent unauthorized access to invitation service traffic
Implement VLAN segmentation or firewall rules to restrict access to Apps Manager network
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Apps Manager from untrusted networks
- Deploy network monitoring and IDS/IPS to detect credential interception attempts
🔍 How to Verify
Check if Vulnerable:
Check Apps Manager version via management interface or API. If version is 665.0.x < 665.0.28, 666.0.x < 666.0.21, or 667.0.x < 667.0.7, system is vulnerable.Check Version:
Check Pivotal Ops Manager dashboard or use 'cf curl /v2/info' to verify platform versionVerify Fix Applied:
Verify Apps Manager version is 665.0.28+, 666.0.21+, or 667.0.7+. Confirm invitation service endpoints use HTTPS.📡 Detection & Monitoring
Log Indicators:
- Unusual invitation requests from unexpected IPs
- Multiple failed authentication attempts following invitation
Network Indicators:
- HTTP traffic to invitation service endpoints
- Unencrypted credential transmission in network captures
SIEM Query:
source="apps-manager" AND (http_method="POST" AND uri="/invitations" AND protocol="HTTP")