CVE-2024-47519
📋 TL;DR
CVE-2024-47519 is a man-in-the-middle vulnerability in Arista's ETM backup upload functionality that allows attackers to intercept and potentially modify backup data during transmission. This affects organizations using Arista ETM for network management with backup uploads enabled. The vulnerability stems from insufficient transport layer protection during backup operations.
💻 Affected Systems
- Arista Extensible Traffic Manager (ETM)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could intercept sensitive network configuration backups, modify them to include malicious configurations, and cause network disruption or gain persistent access to network infrastructure.
Likely Case
Unauthorized interception of backup data containing network configurations, credentials, and sensitive operational information that could be used for reconnaissance or targeted attacks.
If Mitigated
Limited exposure if backups are performed over isolated management networks or with additional encryption layers, though the vulnerability still exists in the base functionality.
🎯 Exploit Status
Exploitation requires network access to intercept backup traffic between ETM and backup destinations. No authentication bypass is needed as the vulnerability is in the transport mechanism.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ETM version 4.30.0 and later
Vendor Advisory: https://www.arista.com/en/support/advisories-notices/security-advisory/20454-security-advisory-0105
Restart Required: No
Instructions:
1. Download ETM version 4.30.0 or later from Arista support portal. 2. Follow Arista's upgrade procedures for ETM. 3. Verify the upgrade completed successfully. 4. Test backup functionality post-upgrade.
🔧 Temporary Workarounds
Use secure backup transport
allImplement additional encryption layers for backup transfers using VPNs, SSH tunnels, or dedicated secure channels
Isolate backup network
allSegment backup traffic to dedicated, isolated network segments with strict access controls
🧯 If You Can't Patch
- Disable automated backup uploads and perform manual backups over verified secure channels
- Implement network monitoring and intrusion detection specifically for backup traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check ETM version via web interface or CLI. If version is below 4.30.0 and backup uploads are enabled, the system is vulnerable.Check Version:
show version | include ETMVerify Fix Applied:
Verify ETM version is 4.30.0 or higher and test backup upload functionality while monitoring network traffic for proper encryption.📡 Detection & Monitoring
Log Indicators:
- Unusual backup failure patterns
- Multiple backup retry attempts
- Backup size anomalies
Network Indicators:
- Unencrypted backup traffic on network segments
- Unexpected devices intercepting backup traffic
- Backup traffic to unusual destinations
SIEM Query:
source="etm-backup" AND (event_type="backup_failed" OR event_type="backup_interrupted")