CVE-2024-34103: Adobe Commerce Privilege Escalation Flaw

CVE-2024-34103 Overview

CVE-2024-34103 is an Improper Authentication vulnerability [CWE-287] affecting Adobe Commerce, Adobe Commerce Webhooks, and Magento Open Source. The flaw impacts versions 2.4.7, 2.4.6-p5, 2.4.5-p7, 2.4.4-p8, and earlier. An unauthenticated attacker can exploit the weakness to gain unauthorized access or elevated privileges within the application. Exploitation does not require user interaction, but attack complexity is high. Adobe addressed the issue in security advisory APSB24-40, published in June 2024.

Critical Impact
Successful exploitation grants attackers privileged access to Adobe Commerce and Magento storefronts, exposing customer data, order systems, and administrative functions.

Affected Products

Adobe Commerce 2.4.7 and earlier (including 2.3.7 branch)
Adobe Commerce Webhooks
Magento Open Source 2.4.4 through 2.4.7-b1

Discovery Timeline

2024-06-13 - CVE-2024-34103 published to NVD
2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-34103

Vulnerability Analysis

The vulnerability resides in the authentication logic of Adobe Commerce and Magento Open Source. Improper authentication handling [CWE-287] allows an attacker to bypass identity validation checks and obtain access tied to a higher privilege level. The flaw is reachable over the network without authentication or user interaction. The high attack complexity indicates that exploitation requires specific conditions or sequencing, such as crafted requests against vulnerable authentication endpoints. Once these conditions are met, the attacker gains full impact on confidentiality, integrity, and availability of the affected storefront.

Root Cause

The root cause is an authentication weakness in how Adobe Commerce verifies the identity of requesters against privileged actions. The application does not adequately enforce identity checks before granting elevated capabilities. Adobe has not published the specific component path in the public advisory, but the issue is categorized under CWE-287, Improper Authentication, indicating that the trust decision occurs without sufficient verification of the principal making the request.

Attack Vector

An unauthenticated remote attacker sends crafted requests to a vulnerable Adobe Commerce or Magento endpoint reachable over the network. The attacker leverages the authentication gap to assume privileges associated with another account or role. No social engineering is required. Because Adobe Commerce typically backs public e-commerce sites, attacker-accessible storefronts are routinely exposed to the internet. See the Adobe Security Advisory APSB24-40 for vendor-confirmed details.

Detection Methods for CVE-2024-34103

Indicators of Compromise

Unexpected administrative account creation or role changes in the Adobe Commerce admin database tables
Anomalous authentication events against /admin, /rest/V1, or webhook endpoints originating from unfamiliar IP ranges
Modifications to product, customer, or order data attributable to accounts that did not authenticate through normal flows

Detection Strategies

Inspect web server access logs for repeated requests to authentication-adjacent endpoints producing unusual response codes or sizes
Correlate Adobe Commerce admin activity logs with authentication events to identify privileged actions lacking a corresponding login
Compare installed Adobe Commerce and Magento versions against the fixed releases listed in APSB24-40

Monitoring Recommendations

Forward Adobe Commerce application logs, web server logs, and database audit logs to a centralized analytics platform
Alert on creation of new admin users, permission grants, and changes to API integration tokens
Monitor webhook configuration changes that could be abused to exfiltrate data or pivot internally

How to Mitigate CVE-2024-34103

Immediate Actions Required

Apply the patches listed in Adobe Security Advisory APSB24-40 without delay
Inventory all Adobe Commerce, Commerce Webhooks, and Magento Open Source instances and verify versions against the fixed releases
Rotate administrator credentials, API integration tokens, and webhook secrets after patching

Patch Information

Adobe released fixed builds for Adobe Commerce and Magento Open Source on June 11, 2024, as documented in APSB24-40. Upgrade to 2.4.7-p1, 2.4.6-p6, 2.4.5-p8, or 2.4.4-p9 or later. Adobe Commerce Webhooks should be updated to version 1.5.0 or later per the same advisory.

Workarounds

Restrict access to the Adobe Commerce admin panel and webhook endpoints using IP allowlists or VPN gating
Place the storefront behind a Web Application Firewall (WAF) with rules tuned to block anomalous authentication traffic
Enforce two-factor authentication for all administrative accounts to limit the value of any compromised credentials

bash

# Verify Adobe Commerce / Magento version after upgrade
php bin/magento --version

# Confirm patches are applied and cache is cleared
php bin/magento setup:upgrade
php bin/magento cache:flush