CVE-2024-33003: SAP Commerce Cloud Info Disclosure Flaw

CVE-2024-33003 Overview

CVE-2024-33003 is a critical information exposure vulnerability affecting SAP Commerce Cloud's OCC (Omni Commerce Connect) API endpoints. The vulnerability allows Personally Identifiable Information (PII) data—including passwords, email addresses, mobile numbers, coupon codes, and voucher codes—to be transmitted as query or path parameters within request URLs. This insecure design pattern exposes sensitive user data through URL logging, browser history, referrer headers, and network monitoring.

Critical Impact

Successful exploitation leads to high impact on both confidentiality and integrity of the application, potentially exposing sensitive customer credentials and personal data across SAP Commerce Cloud deployments.

Affected Products

• SAP Commerce Cloud 1811
• SAP Commerce Cloud 1905
• SAP Commerce Cloud 2005
• SAP Commerce Cloud 2011
• SAP Commerce Cloud 2105
• SAP Commerce Cloud 2205
• SAP Commerce Cloud 2211
• SAP Commerce Cloud HY_COM_1808

Discovery Timeline

• 2024-08-13 - CVE-2024-33003 published to NVD
• 2024-09-16 - Last updated in NVD database

Technical Details for CVE-2024-33003

Vulnerability Analysis

This vulnerability is categorized under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The core issue stems from the improper handling of sensitive data within OCC API endpoints, where PII is accepted and transmitted via URL parameters rather than through secure request body mechanisms.

When sensitive information such as passwords or personal identifiers are included in URL query strings or path parameters, this data becomes exposed through multiple vectors: web server access logs, browser history, HTTP referrer headers, proxy server logs, and network monitoring tools. This architectural flaw violates fundamental security principles for handling sensitive data in web applications.

The vulnerability affects network-accessible API endpoints without requiring authentication or user interaction, making it particularly dangerous in enterprise e-commerce environments where customer PII is routinely processed.

Root Cause

The root cause of CVE-2024-33003 lies in the insecure API design of certain OCC API endpoints within SAP Commerce Cloud. Rather than requiring sensitive data to be transmitted via HTTP POST request bodies with appropriate encryption and handling, the affected endpoints accept PII data within URL query strings and path parameters. This design decision violates security best practices outlined in OWASP guidelines for sensitive data handling, as URLs are inherently logged, cached, and exposed across multiple system components.

Attack Vector

The attack vector is network-based, requiring no privileges or user interaction. An attacker can exploit this vulnerability through several methods:

Passive Data Collection: Monitoring network traffic, proxy logs, or web server access logs to harvest sensitive data embedded in URLs. Since URLs containing passwords, email addresses, and other PII are logged by default in most web infrastructure, attackers with access to these logs can extract credentials and personal information.

Referrer Header Exploitation: When users navigate from SAP Commerce Cloud pages containing sensitive URL parameters to external sites, the full URL (including PII) may be transmitted in HTTP Referrer headers to third-party servers.

Browser History Mining: Client-side malware or shared system access can expose URLs containing sensitive data stored in browser history and autocomplete databases.

The vulnerability does not require exploitation code in the traditional sense—simply crafting API requests that include PII in URL parameters and capturing the resulting logs or network traffic is sufficient to extract sensitive information.

Detection Methods for CVE-2024-33003

Indicators of Compromise

• Web server access logs containing passwords, email addresses, or mobile numbers in URL query parameters
• Unusual patterns of OCC API endpoint access with sensitive data visible in request URIs
• Evidence of log file access or exfiltration by unauthorized accounts
• Referrer header data containing customer PII being sent to third-party domains

Detection Strategies

• Implement log analysis rules to detect PII patterns (email addresses, phone numbers, potential passwords) appearing in URL fields
• Deploy web application firewalls (WAF) with rules to flag requests containing sensitive data in query strings
• Configure SIEM alerts for unusual access patterns to web server log files
• Review referrer header logs for evidence of PII leakage to external domains

Monitoring Recommendations

• Enable detailed logging on OCC API endpoints and monitor for sensitive data patterns in URLs
• Implement real-time alerting for any credentials or PII detected in URL parameters
• Monitor for unauthorized access to web server logs, proxy logs, and network capture files
• Establish baseline API usage patterns and alert on deviations that may indicate exploitation attempts

How to Mitigate CVE-2024-33003

Immediate Actions Required

• Apply the SAP security patch referenced in SAP Note #3459935 immediately
• Review and rotate any credentials that may have been exposed through URL logging
• Audit web server access logs and purge entries containing sensitive PII data
• Implement WAF rules to block API requests containing sensitive data in URL parameters
• Notify affected customers if evidence of PII exposure is discovered in logs

Patch Information

SAP has released security updates to address CVE-2024-33003. Organizations should consult SAP Security Patch Day for the latest patch information. The specific remediation details are documented in SAP Note #3459935, which requires SAP customer access to view.

Affected versions include SAP Commerce Cloud releases 1811, 1905, 2005, 2011, 2105, 2205, 2211, and HY_COM_1808. Organizations should prioritize patching based on exposure level and criticality of their e-commerce deployments.

Workarounds

• Deploy reverse proxy or WAF rules to reject API requests containing PII patterns in URL parameters
• Implement custom API gateway filtering to strip or block sensitive data from query strings
• Configure web servers to exclude or redact URL query parameters from access logs
• Use network segmentation to limit exposure of OCC API endpoints to trusted networks only
• Consider temporarily disabling affected OCC API endpoints until patches can be applied in high-risk environments

# Example Apache configuration to suppress query strings in logs
# Add to httpd.conf or virtual host configuration
LogFormat "%h %l %u %t \"%m %U\" %>s %b" no_query_log
CustomLog logs/access_log no_query_log

# Example nginx configuration to redact sensitive parameters
# Add to nginx.conf
log_format redacted '$remote_addr - $remote_user [$time_local] '
                   '"$request_method $uri" $status $body_bytes_sent';
access_log /var/log/nginx/access.log redacted;