CVE-2024-29849: Veeam Backup Enterprise Manager Auth Bypass

CVE-2024-29849 Overview

Veeam Backup Enterprise Manager allows unauthenticated users to log in as any user to the enterprise manager web interface.

Critical Impact

This vulnerability allows for unauthorized access, significantly impacting confidentiality, integrity, and availability.

Affected Products

• Veeam Backup & Replication

Discovery Timeline

• 2024-05-22 - CVE CVE-2024-29849 published to NVD
• 2025-07-03 - Last updated in NVD database

Technical Details for CVE-2024-29849

Vulnerability Analysis

This vulnerability is an authentication bypass (CWE-287) allowing unauthenticated users to log in to the Veeam Backup Enterprise Manager web interface by exploiting an improperly configured authentication framework.

Root Cause

The root cause of this vulnerability is the inadequate verification of the authentication state during the login process.

Attack Vector

Attackers can exploit this vulnerability remotely over the network without any prior authentication, leveraging an HTTP request to manipulate session credentials and access the web interface.

# Example exploitation code (sanitized)
import requests

url = "http://example.com/login"
headers = {
    "Content-Type": "application/json"
}
data = {
    "username": "admin",
    "password": ""
}
response = requests.post(url, json=data, headers=headers)
if response.status_code == 200:
    print("Authenticated as admin")

Detection Methods for CVE-2024-29849

Indicators of Compromise

• Unusual login activities
• Access logs showing logins without authentication
• Altered system configurations

Detection Strategies

Implement user behavior analytics to identify anomalous access patterns. Use log correlation tools to track and alert on unauthorized login attempts.

Monitoring Recommendations

Regularly monitor access logs and employ SIEM solutions to identify patterns associated with unauthorized access attempts.

How to Mitigate CVE-2024-29849

Immediate Actions Required

• Apply the security patch provided by Veeam immediately
• Restrict access to the management interface through network segmentation
• Ensure multi-factor authentication is enabled

Patch Information

Veeam has released a security patch to address this vulnerability. Refer to Veeam's advisory for patch details.

Workarounds

If patching is not immediately feasible, restrict access to the Veeam Backup Enterprise Manager interface to only trusted IP addresses.

# Configuration example
iptables -A INPUT -p tcp --dport 443 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP