CVE-2024-23564: HCL Aftermarket EPC Business Logic Vulnerability Allows Password Disclosure

Executive Summary

A critical business logic vulnerability tracked as CVE-2024-23564 has been disclosed in HCL Aftermarket EPC (Electronic Parts Catalog). With a CVSS score of 9.1, the flaw enables a non-valid (unauthenticated or unauthorized) user to obtain passwords stored on or generated by the server and redirect them to an attacker-controlled email address by manipulating server-side application responses.

Vulnerability Details

Technical Analysis

The vulnerability resides in the password retrieval and delivery workflow of HCL Aftermarket EPC. While the application implements initial checks in early request stages to verify user identity, these protections can be bypassed by manipulating the server's response at a later stage in the flow.

An attacker who is not a legitimate user of the application can:

1. Trigger the password retrieval flow by crafting requests that pass early-stage validation
2. Intercept or replay server responses to manipulate the email delivery target
3. Redirect password emails to an attacker-controlled address, obtaining plaintext or recoverable credential material

This class of vulnerability — where frontend/middleware checks are insufficient and the core business logic trusts unvalidated state — is particularly dangerous in enterprise applications that handle sensitive authentication data.

Affected Systems

• HCL Aftermarket EPC: An enterprise Electronic Parts Catalog platform used by automotive OEMs, dealers, and parts distributors. The platform manages parts data, ordering workflows, and dealer network authentication.

Impact

A successful exploit allows a threat actor to:

• Obtain valid credentials for application accounts without knowing the original password
• Access dealer or supplier portals through credential theft
• Pivot into connected supply chain or ERP systems if SSO or shared credentials are used
• Enumerate user accounts by triggering multiple password disclosure events

Given the automotive and industrial supply chain use cases, a breach of this type could expose sensitive commercial, parts pricing, or logistics data.

Recommended Actions

1. Apply vendor-issued patches from HCL Software as soon as they become available
2. Audit access logs for unusual password reset activity or email delivery anomalies
3. Review email delivery configurations to ensure password notification emails cannot be redirected via user-supplied parameters
4. Implement server-side validation at every stage of password workflows — do not rely solely on early-stage checks
5. Enable MFA on all EPC portal accounts to limit the value of stolen credentials
6. Monitor for unauthorized access from new IP addresses or unusual geographic locations following any suspicious password reset activity

References

• NVD: CVE-2024-23564
• HCL Software Security Advisory (check vendor security portal for patch details)