CVE-2024-50617: CIPPlanner CIPAce Path Traversal Flaw

CVE-2024-50617 Overview

CVE-2024-50617 is an authorization bypass vulnerability affecting CIPPlanner CIPAce before version 9.17. The vulnerability exists in the File Download and Get File handler components, allowing authenticated attackers to download unauthorized files by manipulating file ID parameters or passing physical file paths directly in URL query strings. This represents a significant broken access control issue where document-level data access restrictions can be circumvented.

Critical Impact

Authenticated users can bypass document access controls to retrieve arbitrary files from the CIPAce system, potentially exposing sensitive organizational data, project documentation, and confidential business information.

Affected Products

• CIPPlanner CIPAce versions before 9.17
• File Download handler component
• Get File handler component

Discovery Timeline

• 2026-02-11 - CVE-2024-50617 published to NVD
• 2026-02-12 - Last updated in NVD database

Technical Details for CVE-2024-50617

Vulnerability Analysis

This vulnerability stems from improper authorization controls (CWE-285) in the file retrieval mechanisms of CIPPlanner CIPAce. The application fails to properly validate whether an authenticated user has the appropriate permissions to access requested files before serving them. Two distinct attack vectors exist: manipulation of file ID parameters and direct specification of physical file paths in URL query strings.

The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring user interaction. While authentication is required to access the affected components, once authenticated, any user can potentially access files beyond their authorized scope. The impact is primarily confidentiality-focused, as attackers can retrieve files they should not have access to, though the integrity and availability of the system remain unaffected.

Root Cause

The root cause is an Improper Authorization (CWE-285) issue where the File Download and Get File handler components fail to enforce proper access control checks. The application does not verify that the requesting user has legitimate access rights to the specified file before processing the download request. This allows authenticated users to enumerate and retrieve files outside their authorized access scope by simply modifying request parameters.

Attack Vector

The attack vector is network-based and requires the attacker to be authenticated to the CIPAce application. Once authenticated, an attacker can exploit this vulnerability through two methods:

1. File ID Parameter Manipulation: By incrementing or decrementing the file ID parameter in download requests, attackers can enumerate and access files belonging to other users or projects.

2. Physical Path Specification: Attackers can directly specify physical file paths in the URL query string, potentially accessing any file on the server that the application process has permissions to read.

Both methods bypass the intended document-level access controls that should restrict file access based on user permissions and data access configurations. For technical details and remediation information, refer to the CIP Planner CVE-2024-50617 Notification.

Detection Methods for CVE-2024-50617

Indicators of Compromise

• Unusual patterns in file download requests with sequential or manipulated file ID parameters
• HTTP requests containing suspicious file path strings in URL query parameters
• Access logs showing users downloading files outside their normal scope or project assignments
• Increased volume of file download requests from individual user accounts

Detection Strategies

• Monitor web server access logs for file download requests with anomalous file ID patterns or physical path references
• Implement application-level logging to track file access attempts and correlate with user authorization levels
• Deploy web application firewall (WAF) rules to detect path traversal patterns in query strings
• Configure alerting for users accessing unusually high numbers of files or files across multiple projects

Monitoring Recommendations

• Enable detailed audit logging on the CIPAce application to capture all file download activities
• Review access logs regularly for patterns indicating file enumeration attempts
• Implement user behavior analytics to detect anomalous file access patterns
• Monitor for successful file downloads that do not match the user's configured data access permissions

How to Mitigate CVE-2024-50617

Immediate Actions Required

• Upgrade CIPPlanner CIPAce to version 9.17 or later immediately
• Review file access logs to identify any potential unauthorized file retrievals
• Conduct an audit of sensitive files that may have been accessed without authorization
• Temporarily restrict access to the File Download and Get File handler components if immediate patching is not possible

Patch Information

CIPPlanner has addressed this vulnerability in CIPAce version 9.17. Organizations running earlier versions should upgrade to version 9.17 or later to remediate this vulnerability. Detailed patch information and installation guidance is available from the CIP Planner CVE-2024-50617 Notification.

Workarounds

• Implement network-level access controls to limit access to the CIPAce application to trusted IP ranges
• Enable additional authentication requirements for file download functionality if supported
• Deploy a web application firewall (WAF) with rules to detect and block file ID enumeration and path manipulation attempts
• Conduct a review of user access permissions and remove unnecessary document access configurations

# Example: WAF rule to block path traversal attempts in query strings
# Add to your WAF configuration to help mitigate exploitation attempts
# Note: This is a defensive measure, not a substitute for patching

# Block requests with common path traversal patterns
SecRule ARGS "@rx (\.\./|\.\.\\|%2e%2e%2f|%2e%2e/|\.%2e/|%2e\.)" \
    "id:1001,phase:2,deny,status:403,msg:'Path traversal attempt detected'"