CVE-2024-7570: Ivanti Neurons Auth Bypass Vulnerability

CVE-2024-7570 Overview

CVE-2024-7570 is an improper certificate validation vulnerability affecting Ivanti ITSM on-prem and Neurons for ITSM versions 2023.4 and earlier. This cryptographic vulnerability allows a remote attacker positioned in a Man-in-the-Middle (MITM) scenario to craft malicious authentication tokens, potentially enabling unauthorized access to the ITSM platform as any user within the organization.

Critical Impact

Attackers exploiting this vulnerability can impersonate any user within the Ivanti ITSM environment, including administrators, potentially leading to complete compromise of IT service management operations, sensitive data exposure, and lateral movement within the enterprise network.

Affected Products

• Ivanti Neurons for ITSM version 2023.2
• Ivanti Neurons for ITSM version 2023.3
• Ivanti Neurons for ITSM version 2023.4

Discovery Timeline

• August 13, 2024 - CVE-2024-7570 published to NVD
• September 6, 2024 - Last updated in NVD database

Technical Details for CVE-2024-7570

Vulnerability Analysis

This vulnerability stems from improper certificate validation (CWE-295) within Ivanti's ITSM authentication mechanism. The flaw exists in how the application validates certificates during the authentication token generation and verification process. When certificate validation is improperly implemented, attackers can intercept network communications and manipulate the authentication flow without triggering security warnings or validation failures.

The vulnerability requires the attacker to be in a Man-in-the-Middle position on the network, which necessitates some level of network access or proximity to the target. Once positioned, the attacker can exploit the certificate validation weakness to forge authentication tokens that the ITSM system accepts as legitimate. This allows the attacker to authenticate as any user, including those with elevated privileges such as system administrators.

Root Cause

The root cause of CVE-2024-7570 lies in insufficient certificate validation logic within the Ivanti Neurons for ITSM authentication subsystem. Proper certificate validation should verify the certificate chain, check for revocation, validate the certificate's validity period, and ensure the certificate is issued by a trusted Certificate Authority. When any of these validation steps are missing or improperly implemented, attackers can present fraudulent certificates that the system incorrectly trusts.

In this case, the improper validation allows attackers to intercept the authentication process and inject crafted tokens that bypass the intended security controls, effectively breaking the trust model that protects user authentication.

Attack Vector

The attack requires network-level access to position the attacker between the client and the Ivanti ITSM server. This is typically achieved through techniques such as ARP spoofing on local networks, DNS poisoning, BGP hijacking, or compromising network infrastructure like routers or switches. Once positioned in the communication path, the attacker can:

1. Intercept authentication requests between clients and the ITSM server
2. Exploit the certificate validation weakness to present a malicious certificate
3. Craft authentication tokens that impersonate legitimate users
4. Gain unauthorized access to the ITSM system with the privileges of the impersonated user

The network-based attack vector combined with the ability to impersonate any user makes this vulnerability particularly dangerous in enterprise environments where Ivanti ITSM manages critical IT operations.

Detection Methods for CVE-2024-7570

Indicators of Compromise

• Unusual authentication patterns such as users authenticating from unexpected network locations or multiple simultaneous sessions from different IP addresses
• Certificate-related warnings or errors in ITSM application logs that may indicate certificate manipulation attempts
• Network traffic anomalies between clients and ITSM servers, particularly SSL/TLS renegotiation patterns
• Unexpected administrative actions performed by user accounts that should not have elevated privileges

Detection Strategies

• Implement network-level monitoring for ARP spoofing, DNS poisoning, and other MITM attack indicators on network segments containing ITSM infrastructure
• Enable detailed authentication logging in Ivanti ITSM and correlate with SIEM solutions to detect anomalous login patterns
• Deploy certificate pinning monitoring to detect when certificates presented differ from expected values
• Use endpoint detection and response (EDR) solutions to identify suspicious process behavior related to authentication token manipulation

Monitoring Recommendations

• Configure alerts for authentication events from unusual geographic locations or network segments
• Monitor for multiple concurrent sessions from a single user account across different IP addresses
• Implement network flow analysis to detect potential MITM positioning attempts
• Regularly audit administrative actions within ITSM to identify unauthorized changes

How to Mitigate CVE-2024-7570

Immediate Actions Required

• Apply the security patches provided by Ivanti as outlined in their security advisory immediately
• Conduct a network security assessment to identify potential MITM attack vectors in your environment
• Review authentication logs for any signs of exploitation or suspicious activity prior to patching
• Implement network segmentation to limit exposure of ITSM servers to untrusted network segments

Patch Information

Ivanti has released security updates to address this vulnerability. Organizations should review the Ivanti Security Advisory for CVE-2024-7569 and CVE-2024-7570 for specific patch versions and upgrade instructions. It is critical to update affected installations to versions released after the 2023.4 release that include the certificate validation fix.

Workarounds

• Implement strict network access controls to limit which systems can communicate with ITSM servers
• Deploy network-based intrusion detection systems (IDS) to monitor for MITM attack indicators
• Enable enhanced SSL/TLS logging on network devices to detect certificate anomalies
• Consider using VPN connections for remote ITSM access to reduce MITM exposure on untrusted networks
• Implement certificate pinning at the network level where possible to prevent certificate substitution attacks