CVE-2019-14852
📋 TL;DR
CVE-2019-14852 is a cryptographic vulnerability in 3scale's APIcast gateway that allows TLS 1.0 protocol usage, enabling attackers to potentially decrypt sensitive API traffic. This affects Red Hat 3scale API Management Platform deployments using vulnerable APIcast versions. Organizations transmitting sensitive data through these gateways are at risk of data exposure.
💻 Affected Systems
- Red Hat 3scale API Management Platform
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers intercept and decrypt all API traffic passing through the gateway, exposing authentication tokens, personal data, and business-critical information.
Likely Case
Selective decryption of sensitive API calls containing authentication credentials or personal identifiable information.
If Mitigated
No data exposure if TLS 1.0 is disabled and modern protocols are enforced.
🎯 Exploit Status
Requires man-in-the-middle position and TLS 1.0 downgrade capability
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Updated APIcast versions from Red Hat
Vendor Advisory: https://bugzilla.redhat.com/show_bug.cgi?id=1758208
Restart Required: Yes
Instructions:
1. Update APIcast to patched version via Red Hat channels. 2. Restart APIcast service. 3. Verify TLS 1.0 is disabled in configuration.
🔧 Temporary Workarounds
Disable TLS 1.0 in APIcast configuration
linuxManually configure APIcast to disable TLS 1.0 and enforce TLS 1.2 or higher
Edit APIcast configuration to set ssl_protocols: TLSv1.2 TLSv1.3
Restart APIcast service
🧯 If You Can't Patch
- Implement network-level TLS inspection to block TLS 1.0 connections
- Use API gateway load balancer to enforce modern TLS protocols
🔍 How to Verify
Check if Vulnerable:
Check APIcast configuration for TLS 1.0 support and test with openssl s_client -connect <gateway>:<port> -tls1Check Version:
apicast --version or check container/pod versionVerify Fix Applied:
Confirm TLS 1.0 connections fail and only TLS 1.2+ connections succeed📡 Detection & Monitoring
Log Indicators:
- TLS 1.0 handshake attempts in APIcast logs
- Unexpected protocol negotiation events
Network Indicators:
- TLS 1.0 ClientHello packets to APIcast endpoints
- Successful TLS 1.0 sessions
SIEM Query:
source="apicast" AND "TLSv1" OR "TLS 1.0"