CVE-2024-11639: Ivanti CSA Auth Bypass Vulnerability

CVE-2024-11639 Overview

An authentication bypass in the admin web console of Ivanti CSA before version 5.0.3 allows a remote unauthenticated attacker to gain administrative access.

Critical Impact
This vulnerability allows complete administrative control to unauthorized users.

Affected Products

Ivanti Cloud Services Appliance

Discovery Timeline

Not Available - Vulnerability discovered by Not Available
Not Available - Responsible disclosure to Ivanti
Not Available - CVE CVE-2024-11639 assigned
Not Available - Ivanti releases security patch
2024-12-10 - CVE CVE-2024-11639 published to NVD
2025-01-17 - Last updated in NVD database

Technical Details for CVE-2024-11639

Vulnerability Analysis

The vulnerability is due to improper validation of user access requests, allowing attackers to bypass authentication checks and obtain admin-level control.

Root Cause

The underlying issue is a missing validation mechanism in user authentication processes, failing to enforce role-based access control.

Attack Vector

Network-based attackers can exploit this by interacting with the admin web console over the network.

bash

# Example exploitation code (sanitized)
curl -X POST \  
  https://victim.example.com/admin \  
  -d '{"username":"admin","password":"wrongpassword"}'

Detection Methods for CVE-2024-11639

Indicators of Compromise

Unusual login attempts from unknown IP addresses
Modifications in administrative settings without authorized logs
Anomalous activities following failed login attempts

Detection Strategies

Utilize network intrusion detection systems (NIDS) to monitor for suspicious login attempts and unauthorized access patterns.

Monitoring Recommendations

Continuously audit access logs for administrative console interactions and validate IP addresses against threat intelligence feeds.

How to Mitigate CVE-2024-11639

Immediate Actions Required

Update to Ivanti CSA version 5.0.3 or later
Restrict network access to the admin console
Reinforce multi-factor authentication mechanisms

Patch Information

Ivanti has released patches which address this vulnerability in version 5.0.3, details available in their Security Advisory.

Workarounds

Implement strict firewall rules to limit access to trusted IP ranges and enhance logging mechanisms to detect unauthorized access attempts.