CVE-2024-8190: Ivanti Cloud Services Appliance RCE Flaw

CVE-2024-8190 Overview

An OS command injection vulnerability exists in Ivanti Cloud Services Appliance (CSA) versions 4.6 Patch 518 and earlier that allows a remote authenticated attacker to achieve remote code execution. This vulnerability requires the attacker to possess administrative-level privileges to successfully exploit the flaw. The vulnerability is classified as CWE-78 (Improper Neutralization of Special Elements used in an OS Command) and represents a significant security risk for organizations using affected Ivanti CSA deployments.

Critical Impact

This vulnerability has been added to CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. Organizations using Ivanti CSA should treat this as a priority security concern requiring immediate remediation.

Affected Products

• Ivanti Cloud Services Appliance version 4.6
• Ivanti Cloud Services Appliance version 4.6 Patch 518
• Ivanti Cloud Services Appliance versions prior to 4.6 Patch 518

Discovery Timeline

• 2024-09-10 - CVE-2024-8190 published to NVD
• 2025-10-24 - Last updated in NVD database

Technical Details for CVE-2024-8190

Vulnerability Analysis

CVE-2024-8190 is an OS command injection vulnerability affecting the Ivanti Cloud Services Appliance. The flaw allows an authenticated attacker with administrative privileges to inject arbitrary operating system commands through improperly sanitized user input. When successfully exploited, the attacker can execute commands with the privileges of the underlying system process, potentially leading to full system compromise.

The vulnerability requires network access and administrative authentication, which somewhat limits the attack surface. However, the impact is substantial as successful exploitation grants the attacker complete control over confidentiality, integrity, and availability of the affected system. Given that the CSA is often deployed as a critical infrastructure component for managing cloud services, compromise could enable lateral movement to other enterprise systems.

Root Cause

The root cause of this vulnerability is improper neutralization of special elements used in OS commands (CWE-78). User-controlled input is passed to an OS command execution function without adequate sanitization or validation. This allows an authenticated administrator to inject shell metacharacters or command separators that break out of the intended command context and execute arbitrary commands on the underlying operating system.

Attack Vector

The attack vector is network-based, requiring the attacker to have authenticated access to the Ivanti CSA administrative interface. The attacker must possess valid administrator credentials to reach the vulnerable functionality. Once authenticated, the attacker can craft malicious input containing OS command injection payloads that are processed by the backend system without proper sanitization.

The exploitation chain typically involves:

1. Authenticating to the Ivanti CSA administrative interface with admin credentials
2. Identifying the vulnerable parameter or endpoint that processes user input
3. Injecting OS command metacharacters (such as ;, |, &&, or backticks) along with malicious commands
4. The injected commands execute with the privileges of the CSA application process

For detailed technical information on the vulnerability mechanism, refer to the Ivanti Security Advisory.

Detection Methods for CVE-2024-8190

Indicators of Compromise

• Unexpected or anomalous command execution logged in system or application logs on CSA appliances
• Unusual outbound network connections from the CSA to unknown external IP addresses
• Unauthorized user accounts or privilege changes on the CSA system
• Modified system files, configuration files, or newly created files in unexpected directories
• Web server access logs showing suspicious requests to administrative endpoints with unusual parameter values

Detection Strategies

• Monitor administrative authentication logs for unusual access patterns or brute-force attempts
• Implement web application firewall (WAF) rules to detect and block common OS command injection patterns in HTTP requests
• Deploy endpoint detection and response (EDR) solutions on CSA appliances to detect anomalous process execution
• Review system logs for shell commands executed by the web application process that deviate from normal operational patterns

Monitoring Recommendations

• Enable verbose logging on Ivanti CSA appliances and forward logs to a centralized SIEM for analysis
• Establish baseline behavior for administrative access and alert on deviations
• Monitor network traffic from CSA appliances for command-and-control (C2) communication patterns
• Implement file integrity monitoring on critical CSA system and configuration files

How to Mitigate CVE-2024-8190

Immediate Actions Required

• Upgrade Ivanti Cloud Services Appliance to a patched version as specified in the vendor advisory immediately
• Verify the integrity of existing CSA installations by reviewing logs and checking for indicators of compromise
• Restrict network access to CSA administrative interfaces using firewall rules or network segmentation
• Review and audit administrator accounts, removing any unauthorized or unnecessary privileged accounts
• Implement multi-factor authentication (MFA) for administrative access where supported

Patch Information

Ivanti has released security updates to address CVE-2024-8190. Organizations should apply the patches immediately according to the guidance provided in the Ivanti Security Advisory. CISA has also issued a security update notification urging organizations to apply the updates as soon as possible due to active exploitation.

As this vulnerability is listed in the CISA Known Exploited Vulnerabilities Catalog, federal agencies are required to remediate within specified timelines, and all organizations are strongly encouraged to prioritize patching.

Workarounds

• Restrict administrative interface access to trusted IP addresses only using firewall ACLs or network segmentation
• Implement a jump host or bastion server for administrative access to CSA appliances
• Disable or limit remote administrative access when not required for maintenance operations
• Deploy a web application firewall (WAF) in front of the CSA to filter potentially malicious requests

# Example: Restrict administrative access using iptables
# Allow administrative access only from trusted management network
iptables -A INPUT -p tcp --dport 443 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP