CVE-2023-38265 Overview
CVE-2023-38265 is an information disclosure vulnerability affecting IBM Cloud Pak System. The vulnerability allows unauthenticated attackers to obtain folder location information from the system through network-accessible endpoints. This information exposure could provide attackers with valuable reconnaissance data to facilitate further attacks against the vulnerable system.
Critical Impact
Unauthenticated attackers can remotely discover internal folder structures and paths, enabling reconnaissance for subsequent attacks against IBM Cloud Pak System deployments.
Affected Products
- IBM Cloud Pak System 2.3.3.6
- IBM Cloud Pak System 2.3.3.7
- IBM Cloud Pak System 2.3.4.0
- IBM Cloud Pak System 2.3.4.1
- IBM Cloud Pak System 2.3.5.0
Discovery Timeline
- 2026-02-17 - CVE CVE-2023-38265 published to NVD
- 2026-02-18 - Last updated in NVD database
Technical Details for CVE-2023-38265
Vulnerability Analysis
This vulnerability is classified under CWE-548 (Exposure of Information Through Directory Listing), which occurs when a web application or server exposes directory structures or file paths to users. In the case of IBM Cloud Pak System, the vulnerability enables unauthenticated remote attackers to discover internal folder locations without requiring any credentials or user interaction.
The exposure of directory and folder information represents a significant reconnaissance opportunity for attackers. While the direct impact is limited to information disclosure (confidentiality compromise), this data can be leveraged to map the internal structure of the target system, identify potential targets for further exploitation, and craft more targeted attacks against specific components or directories within the IBM Cloud Pak System environment.
Root Cause
The root cause of CVE-2023-38265 lies in improper access controls on endpoints that reveal directory or folder information. The system fails to properly restrict access to functionality that discloses internal file system paths, allowing unauthenticated users to query and receive this sensitive information. This represents a failure in implementing the principle of least privilege, where sensitive system metadata should only be accessible to authenticated and authorized users.
Attack Vector
The attack vector for this vulnerability is network-based, requiring no authentication, no user interaction, and low complexity to exploit. An attacker can remotely send requests to the vulnerable IBM Cloud Pak System instance to extract folder location information.
The exploitation process involves an attacker identifying network-accessible endpoints that inadvertently expose directory information. By sending crafted requests to these endpoints, the attacker can enumerate folder paths and directory structures within the system. This information can then be used to plan more sophisticated attacks, such as path traversal attempts or targeted exploitation of specific system components.
For technical details on the vulnerability mechanism and exploitation, refer to the IBM Support Page.
Detection Methods for CVE-2023-38265
Indicators of Compromise
- Unusual or excessive requests to system endpoints that return directory or path information
- Multiple requests from unauthenticated sources probing for file system structures
- Log entries showing access attempts to administrative or configuration endpoints without valid authentication
- Network traffic patterns indicating reconnaissance activities against the Cloud Pak System infrastructure
Detection Strategies
- Monitor web server and application logs for requests that return directory listing or path information
- Implement anomaly detection for unauthenticated requests attempting to access system metadata endpoints
- Deploy network intrusion detection rules to identify scanning or enumeration activities targeting IBM Cloud Pak System
- Review access logs for patterns of requests that may indicate systematic path enumeration attempts
Monitoring Recommendations
- Enable detailed logging for all requests to the IBM Cloud Pak System web interface
- Configure SIEM rules to alert on potential information disclosure attempts
- Implement rate limiting and anomaly detection on endpoints that may expose system information
- Regularly audit access logs for signs of reconnaissance activities
How to Mitigate CVE-2023-38265
Immediate Actions Required
- Review the IBM Support Page for official remediation guidance
- Identify all instances of IBM Cloud Pak System versions 2.3.3.6, 2.3.3.7, 2.3.4.0, 2.3.4.1, and 2.3.5.0 in your environment
- Prioritize patching based on system exposure and network accessibility
- Implement network segmentation to limit external access to vulnerable systems until patches are applied
Patch Information
IBM has released security guidance for this vulnerability. Organizations should consult the official IBM Support Page for specific patch information and upgrade instructions. Apply the recommended patches or upgrade to a fixed version as specified in IBM's security bulletin.
Workarounds
- Restrict network access to IBM Cloud Pak System to trusted networks and IP ranges only
- Implement web application firewall (WAF) rules to filter requests that may be attempting to enumerate directory structures
- Enable authentication requirements for all administrative and system metadata endpoints where possible
- Deploy reverse proxy configurations to limit direct access to vulnerable endpoints
- Monitor for exploitation attempts while awaiting patch deployment
Consult the IBM security advisory for configuration recommendations specific to your deployment environment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
