CVE-2024-23570: HCL Aftermarket EPC XSS Vulnerability

CVE-2024-23570 Overview

CVE-2024-23570 affects HCL Aftermarket EPC and enables a clickjacking attack through Cross-Frame Scripting. An attacker loads the vulnerable application inside an iFrame on a malicious site and tricks authenticated users into interacting with hidden UI elements. Successful exploitation can lead to phishing, Cross-Site Request Forgery (CSRF), and disclosure of sensitive information. The issue is classified under [CWE-200] Information Exposure and requires user interaction to succeed. The vulnerability is network-accessible and does not require authentication from the attacker.

Critical Impact
Attackers can hijack authenticated user actions in HCL Aftermarket EPC to conduct phishing, CSRF, and sensitive information disclosure via framed content.

Affected Products

HCL Aftermarket EPC
Web interfaces served without frame-busting headers
Deployments lacking X-Frame-Options or Content-Security-Policy frame-ancestors directives

Discovery Timeline

2026-07-17 - CVE-2024-23570 published to NVD
2026-07-17 - Last updated in NVD database

Technical Details for CVE-2024-23570

Vulnerability Analysis

The vulnerability stems from HCL Aftermarket EPC allowing its pages to be embedded inside iFrames on attacker-controlled domains. This is a classic Cross-Frame Scripting condition where the application does not restrict frame ancestors. An attacker overlays or hides the framed application under decoy UI elements. When a victim clicks on what appears to be benign content, the click is redirected to a sensitive control within the framed EPC session.

Because the browser attaches session cookies to the framed request, actions execute with the victim's privileges. This enables CSRF-style state changes, credential capture through fake overlays, and exfiltration of session-scoped data. The attack requires the victim to visit an attacker-controlled page while authenticated to the EPC application.

Root Cause

The root cause is the absence of anti-framing controls in HTTP responses. The application does not send an X-Frame-Options: DENY or SAMEORIGIN header, nor a Content-Security-Policy header with a frame-ancestors directive. Without these, browsers permit any origin to embed the application.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker hosts a malicious page containing an iFrame that loads an EPC endpoint. Using CSS opacity and z-index tricks, the attacker positions clickable EPC controls under visible decoy elements. The victim, already authenticated to EPC in the same browser, unwittingly triggers privileged actions or submits form data to the attacker.

No verified public exploit code exists for CVE-2024-23570. Refer to the HCL Software Knowledge Base Article for vendor guidance.

Detection Methods for CVE-2024-23570

Indicators of Compromise

Referer headers on EPC requests pointing to unexpected external domains
Unusual sequences of authenticated state-changing requests originating from a single session shortly after visiting an external site
Absence of X-Frame-Options or Content-Security-Policy: frame-ancestors in EPC HTTP responses

Detection Strategies

Inspect web server responses for missing anti-framing headers using automated scanners
Correlate authentication events with unusual Referer headers in web access logs
Deploy browser-side monitoring to flag when EPC pages are loaded inside a third-party frame

Monitoring Recommendations

Enable verbose HTTP request logging on EPC edge proxies and retain Referer and Origin fields
Alert on authenticated POST requests preceded by cross-origin Referer values
Monitor for phishing infrastructure impersonating EPC branding through domain and certificate transparency feeds

How to Mitigate CVE-2024-23570

Immediate Actions Required

Apply the vendor guidance in the HCL Software Knowledge Base Article
Add X-Frame-Options: DENY or SAMEORIGIN to all HCL Aftermarket EPC HTTP responses
Deploy a Content-Security-Policy header restricting frame-ancestors to trusted origins
Set the SameSite=Strict or SameSite=Lax attribute on session cookies

Patch Information

HCL has published remediation guidance in knowledge base article KB0132294. Administrators should consult the HCL Software Knowledge Base Article for supported versions and configuration updates.

Workarounds

Configure the reverse proxy or web application firewall to inject anti-framing headers on every EPC response
Require re-authentication for sensitive EPC operations to reduce the impact of hijacked clicks
Educate users to avoid maintaining an active EPC session while browsing untrusted sites

bash

# Configuration example - Apache anti-framing headers
Header always set X-Frame-Options "SAMEORIGIN"
Header always set Content-Security-Policy "frame-ancestors 'self'"
Header always edit Set-Cookie ^(.*)$ $1;SameSite=Strict