CVE-2025-62792
📋 TL;DR
A buffer over-read vulnerability in Wazuh allows compromised agents or attackers who can send crafted messages to the Wazuh manager to read beyond allocated memory boundaries, potentially accessing sensitive information. This affects Wazuh deployments with agents that can communicate with the manager. The vulnerability exists in versions prior to 4.12.0.
💻 Affected Systems
- Wazuh
📦 What is this software?
Wazuh by Wazuh
⚠️ Risk & Real-World Impact
Worst Case
An attacker with agent access could read sensitive data from Wazuh manager memory, potentially exposing credentials, configuration secrets, or other protected information.
Likely Case
Compromised agents could exfiltrate limited sensitive data from manager memory, potentially enabling further attacks.
If Mitigated
With proper network segmentation and agent security controls, impact is limited to isolated agent compromise scenarios.
🎯 Exploit Status
Exploitation requires ability to send crafted messages to the Wazuh manager, typically requiring agent compromise or network access to agent-manager communication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.12.0
Vendor Advisory: https://github.com/wazuh/wazuh/security/advisories/GHSA-2672-vfhm-xhr6
Restart Required: Yes
Instructions:
1. Backup Wazuh configuration and data. 2. Update Wazuh manager to version 4.12.0 or later using your package manager. 3. Restart Wazuh services. 4. Update all agents to compatible versions.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict network access to Wazuh manager to only trusted agents and management systems.
# Configure firewall rules to restrict access to Wazuh manager ports (1514-1515, 55000)
sudo iptables -A INPUT -p tcp --dport 1514:1515 -s trusted_network -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 1514:1515 -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Wazuh manager from untrusted networks
- Monitor agent communications for anomalous patterns and implement strict agent authentication controls
🔍 How to Verify
Check if Vulnerable:
Check Wazuh version: wazuh-manager --version or rpm -q wazuh-manager or dpkg -l wazuh-managerCheck Version:
wazuh-manager --version 2>/dev/null || rpm -q wazuh-manager 2>/dev/null || dpkg -l wazuh-manager 2>/dev/null | grep ^iiVerify Fix Applied:
Verify version is 4.12.0 or higher and check that wazuh-manager service is running without errors📡 Detection & Monitoring
Log Indicators:
- Unusual agent connection patterns
- Large or malformed messages in Wazuh logs
- Wazuh manager segmentation faults or crashes
Network Indicators:
- Unusual traffic patterns to Wazuh manager ports (1514-1515, 55000)
- Messages with unusual length or structure
SIEM Query:
source="wazuh" AND ("segmentation fault" OR "buffer" OR "malformed" OR "unexpected")