CVE-2024-5806: Progress MOVEit Transfer Auth Bypass Flaw

CVE-2024-5806 Overview

Improper Authentication vulnerability in Progress MOVEit Transfer (SFTP module) can lead to Authentication Bypass. This issue affects MOVEit Transfer: from 2023.0.0 before 2023.0.11, from 2023.1.0 before 2023.1.6, from 2024.0.0 before 2024.0.2.

Critical Impact

This vulnerability can be exploited over a network without any prior authentication, potentially compromising the confidentiality, integrity, and availability of the system.

Affected Products

• MOVEit Transfer 2023.0.0
• MOVEit Transfer 2023.1.0
• MOVEit Transfer 2024.0.0

Discovery Timeline

• Not Available - Vulnerability discovered by Not Available
• Not Available - Responsible disclosure to Progress
• Not Available - CVE CVE-2024-5806 assigned
• Not Available - Progress releases security patch
• 2024-06-25 - CVE CVE-2024-5806 published to NVD
• 2025-01-16 - Last updated in NVD database

Technical Details for CVE-2024-5806

Vulnerability Analysis

The vulnerability arises from improper authentication checks in the Progress MOVEit Transfer SFTP module, which allows attackers to bypass authentication mechanisms and gain unauthorized access to the system.

Root Cause

The problem is due to insufficient validation logic in the authentication code path of the MOVEit Transfer service.

Attack Vector

Network-based attacks can be executed without requiring prior authentication, making it easily exploitable.

# Example exploitation code (sanitized)
curl -X POST "http://example.com/api/login" \
  -d '{"username":"attacker","password":"not_required"}'

Detection Methods for CVE-2024-5806

Indicators of Compromise

• Unusual access patterns in authentication logs
• Presence of unexpected CLI actions by unauthorized users
• Altered system configurations without legitimate user actions

Detection Strategies

Utilize behavior analysis tools to detect deviations from normal access patterns. Employ network monitoring to identify anomalous traffic signatures typical of exploitation attempts.

Monitoring Recommendations

Continuously monitor authentication logs and SFTP access patterns. Set up alerts for failed login attempts and unusual session durations.

How to Mitigate CVE-2024-5806

Immediate Actions Required

• Disable the affected SFTP module until patched.
• Implement network segmentation to isolate vulnerable systems.
• Employ multi-factor authentication to enhance security.

Patch Information

Update MOVEit Transfer to version 2023.0.11 or 2024.0.2 or later as per the official advisory.

Workarounds

Until patches can be applied, restrict SFTP access to trusted IP addresses and enforce VPN access for external connections.

# Configuration example
iptables -A INPUT -p tcp --dport 22 -s <trusted_ip> -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j DROP