CVE-2024-39737: IBM Datacap Navigator Information Disclosure

CVE-2024-39737 Overview

CVE-2024-39737 is an information disclosure vulnerability affecting IBM Datacap Navigator versions 9.1.5 through 9.1.9. The flaw allows a remote, unauthenticated attacker to obtain sensitive information through detailed technical error messages returned in the browser. Attackers can use the disclosed information to plan further attacks against the affected system.

The issue is tracked as IBM X-Force ID 296004 and is categorized under [CWE-209]: Generation of Error Message Containing Sensitive Information. Because exploitation requires no privileges or user interaction, any user who can reach the Datacap Navigator web interface can trigger the disclosure.

Critical Impact
Remote attackers can harvest technical implementation details from verbose error messages without authentication, enabling reconnaissance for subsequent attacks against IBM Datacap Navigator deployments.

Affected Products

IBM Datacap Navigator 9.1.5
IBM Datacap Navigator 9.1.6, 9.1.7, 9.1.8
IBM Datacap Navigator 9.1.9

Discovery Timeline

2024-07-15 - CVE-2024-39737 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-39737

Vulnerability Analysis

CVE-2024-39737 is an information exposure vulnerability caused by improper handling of application errors. When the Datacap Navigator web application encounters an exception, it returns detailed technical error content directly to the browser instead of a generic error page.

The returned messages can include stack traces, internal file paths, module names, framework versions, database identifiers, or configuration details. This telemetry is intended for developers but becomes reconnaissance material when exposed to untrusted network users. Attackers combine these fragments to map the internal architecture of the application.

The vulnerability aligns with [CWE-209] and is exploited over the network with low attack complexity. Exploitation does not corrupt data or interrupt service. The impact is limited to confidentiality of technical implementation details.

Root Cause

The root cause is verbose error handling in the Datacap Navigator web tier. Unhandled exceptions propagate to the HTTP response layer, where the framework renders diagnostic content instead of a sanitized message. Production deployments should suppress this content, but affected versions ship without adequate filtering.

Attack Vector

An attacker triggers the vulnerability by sending crafted or malformed HTTP requests to Datacap Navigator endpoints. Invalid parameters, unexpected content types, or requests for non-existent resources can produce the verbose error responses. The attacker then parses the HTML or JSON body for internal paths, class names, or dependency versions.

See the IBM X-Force Vulnerability #296004 and the IBM Support Document #7160185 for vendor-supplied technical details.

Detection Methods for CVE-2024-39737

Indicators of Compromise

HTTP responses from Datacap Navigator containing stack traces, exception class names, or absolute file system paths.
Repeated 4xx or 5xx responses correlated with malformed or fuzzed request parameters against Datacap Navigator URLs.
Access log entries showing single-source enumeration of Datacap Navigator endpoints with unusual query strings or content types.

Detection Strategies

Inspect web server and application logs for exception patterns such as java.lang., at com.ibm.datacap, or references to internal server paths returned in HTTP bodies.
Deploy web application firewall rules that flag responses containing debug artifacts or stack trace signatures leaving the Datacap Navigator perimeter.
Baseline normal error response sizes; alert on outbound responses that exceed the baseline and originate from error-handling routes.

Monitoring Recommendations

Forward Datacap Navigator access and application logs to a centralized log platform for retention and query.
Monitor for reconnaissance patterns targeting Datacap Navigator, including sequential invalid parameter injection from a single source IP.
Track authentication and session activity following any error disclosure event to detect follow-on exploitation attempts.

How to Mitigate CVE-2024-39737

Immediate Actions Required

Apply the IBM security update referenced in IBM Support Document #7160185 to all Datacap Navigator instances running versions 9.1.5 through 9.1.9.
Restrict network exposure of the Datacap Navigator web interface to trusted networks and authenticated users where feasible.
Review historical access logs for prior enumeration attempts and document any observed information disclosure.

Patch Information

IBM has published remediation guidance in IBM Support Document #7160185. Administrators should consult the vendor advisory for the specific fix pack or interim fix corresponding to their installed version. Verify the patch level after deployment by requesting a known error-inducing URL and confirming that only a generic error message is returned.

Workarounds

Configure the application server hosting Datacap Navigator to display generic error pages and suppress stack traces in HTTP responses.
Place a reverse proxy or web application firewall in front of Datacap Navigator to strip debug content and enforce standardized error responses.
Limit administrative and diagnostic endpoints to internal management networks until the patch is applied.

bash

# Example: generic error page enforcement at the reverse proxy layer
# (adapt to your specific proxy or application server)
error_page 400 401 403 404 500 502 503 504 /generic_error.html;
location = /generic_error.html {
    internal;
    return 200 "An error occurred. Contact your administrator.";
}
proxy_intercept_errors on;