CVE-2024-30151: HCL BigFix Privilege Escalation Flaw

CVE-2024-30151 Overview

CVE-2024-30151 is a broken access control vulnerability in HCL BigFix Service Management (SX). The flaw allows authenticated low-privileged users to escalate privileges by bypassing access restrictions enforced by the application. Successful exploitation can lead to exposure of sensitive data and unauthorized modifications to system configuration.

The vulnerability is network-exploitable and requires only low-level privileges with no user interaction. HCL has documented the issue in a knowledge base advisory and released remediation guidance for affected customers.

Critical Impact

Authenticated attackers can bypass authorization controls in HCL BigFix Service Management to gain elevated privileges, exposing sensitive data and enabling unauthorized system modifications across the IT service management environment.

Affected Products

• HCL BigFix Service Management (SX)
• See vendor advisory for specific affected versions
• Refer to the HCL Software Knowledge Base Article for the full version matrix

Discovery Timeline

• 2026-05-06 - CVE-2024-30151 published to NVD
• 2026-05-06 - Last updated in NVD database

Technical Details for CVE-2024-30151

Vulnerability Analysis

CVE-2024-30151 is classified as Broken Access Control leading to privilege escalation. The product fails to consistently enforce authorization checks on privileged operations, allowing a low-privileged authenticated user to perform actions reserved for higher-privileged roles.

HCL BigFix Service Management (SX) provides IT service management workflows, including ticketing, change management, and configuration tasks. When access control is enforced only at the user interface layer or relies on client-side role checks, attackers can issue direct API requests that the server processes without re-validating authorization. This pattern is the typical root of vertical privilege escalation in enterprise web applications.

The associated Common Weakness Enumeration is [CWE-532], which addresses insertion of sensitive information into log files. In this context, sensitive data exposure compounds the privilege escalation by potentially leaking credentials or session artifacts that further extend attacker reach.

Root Cause

The root cause is missing or improperly implemented server-side authorization checks on privileged endpoints in BigFix SX. Logic that should validate the caller's role is either bypassable or absent, permitting unauthorized state changes and data access.

Attack Vector

The attack vector is network-based. An attacker must hold valid low-privileged credentials, then send crafted requests to administrative endpoints. No user interaction is required, and the attack complexity is low. Exploitation typically yields high impact to confidentiality and integrity, with limited availability impact.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2024-30151

Indicators of Compromise

• Unexpected role or permission changes on user accounts within BigFix Service Management
• API calls to administrative endpoints originating from accounts that lack the corresponding UI role
• Sensitive parameter values or credentials appearing in application log files, consistent with [CWE-532]
• Configuration or workflow modifications performed outside of approved change windows

Detection Strategies

• Audit BigFix SX application logs for authorization decisions and flag requests where low-privileged sessions access administrative routes
• Compare role assignments in the identity store against historical baselines to identify drift
• Correlate authentication events with subsequent privileged actions to surface impossible role transitions

Monitoring Recommendations

• Forward BigFix SX application and access logs to a centralized SIEM for correlation with identity provider events
• Alert on creation of new administrative accounts or changes to existing role memberships
• Monitor outbound data transfers from BigFix SX hosts for unusual volume or destinations

How to Mitigate CVE-2024-30151

Immediate Actions Required

• Apply the fixed version documented in the HCL Software Knowledge Base Article
• Review all BigFix Service Management user accounts and remove unnecessary privileges
• Rotate credentials for accounts that may have been exposed through application logs
• Restrict network access to BigFix SX management interfaces to trusted administrative networks

Patch Information

HCL has published remediation guidance in knowledge base article KB0127782. Administrators should review the advisory, identify the fixed release for their deployment, and schedule an upgrade. Validate the patch in a staging environment before production rollout.

Workarounds

• Limit BigFix SX access to authenticated users on segmented administrative networks until patching is complete
• Enforce least privilege by reducing the number of accounts with elevated roles
• Increase log review frequency for privileged actions and authorization failures
• Sanitize or rotate any credentials and tokens that may have been written to application logs

# Example: restrict access to BigFix SX management interface using iptables
iptables -A INPUT -p tcp --dport 443 -s 10.10.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP