CVE-2020-24714
📋 TL;DR
CVE-2020-24714 is a critical SSL certificate validation bypass vulnerability in Scalyr Agent versions before 2.1.10. Attackers can perform man-in-the-middle attacks to intercept, modify, or inject data between the agent and Scalyr servers. This affects all organizations using vulnerable Scalyr Agent configurations.
💻 Affected Systems
- Scalyr Agent
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full compromise of monitoring data integrity and confidentiality, allowing attackers to inject malicious data, exfiltrate sensitive logs, or disrupt monitoring operations.
Likely Case
Data interception and manipulation of log data being sent to Scalyr, potentially leading to data leakage or false monitoring alerts.
If Mitigated
Limited impact with proper network segmentation and certificate pinning, though risk remains if attackers gain network access.
🎯 Exploit Status
Exploitation requires network position to intercept SSL/TLS traffic between agent and server.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.10 and later
Vendor Advisory: https://scalyr-static.s3.amazonaws.com/technical-details/index.html
Restart Required: Yes
Instructions:
1. Stop Scalyr Agent service. 2. Upgrade to version 2.1.10 or later using package manager or manual installation. 3. Restart Scalyr Agent service. 4. Verify connection to Scalyr servers.
🔧 Temporary Workarounds
Certificate Pinning
allConfigure agent to pin specific SSL certificates to prevent MITM attacks
Edit scalyr-agent-2 config to add certificate pinning configuration
Network Segmentation
allIsolate agent traffic to trusted networks only
Configure firewall rules to restrict agent outbound connections
🧯 If You Can't Patch
- Implement strict network controls to limit agent communication to trusted paths only
- Deploy SSL/TLS inspection and monitoring for anomalous certificate patterns
🔍 How to Verify
Check if Vulnerable:
Check Scalyr Agent version: scalyr-agent-2 status versionCheck Version:
scalyr-agent-2 status version | grep 'Agent version'Verify Fix Applied:
Verify version is 2.1.10 or later and check agent logs for successful SSL connections with hostname verification📡 Detection & Monitoring
Log Indicators:
- SSL certificate validation errors
- Unexpected certificate changes in agent logs
- Failed hostname verification messages
Network Indicators:
- Unusual SSL/TLS handshake patterns
- MITM detection alerts
- Certificate authority anomalies
SIEM Query:
source="scalyr-agent" (ssl_error OR certificate_error OR hostname_mismatch)