CVE-2024-34107: Adobe Commerce Auth Bypass Vulnerability

CVE-2024-34107 Overview

CVE-2024-34107 is an Improper Access Control vulnerability affecting Adobe Commerce and Magento Open Source platforms. This security flaw allows attackers to bypass security measures and access unauthorized information without requiring any user interaction. The vulnerability impacts a wide range of Adobe Commerce versions, including 2.4.7, 2.4.6-p5, 2.4.5-p7, 2.4.4-p8, and earlier releases.

Critical Impact

This vulnerability enables unauthenticated attackers to bypass security controls over the network, potentially leading to unauthorized access to sensitive e-commerce data including customer information and administrative functions.

Affected Products

• Adobe Commerce versions 2.3.7 through 2.4.7 and all patch levels
• Adobe Commerce Webhooks (all versions)
• Adobe Magento Open Source versions 2.4.4 through 2.4.7 and all patch levels

Discovery Timeline

• June 13, 2024 - CVE-2024-34107 published to NVD
• November 21, 2024 - Last updated in NVD database

Technical Details for CVE-2024-34107

Vulnerability Analysis

This vulnerability is classified as CWE-284 (Improper Access Control), indicating a fundamental flaw in how the application enforces authorization checks. The vulnerability exists in the access control mechanisms of Adobe Commerce and Magento, where certain security boundaries can be circumvented by a remote attacker.

The nature of this improper access control issue means that authenticated or unauthenticated users may be able to access resources, functionality, or data that should be restricted. In e-commerce platforms like Adobe Commerce, this type of vulnerability is particularly concerning as it can expose sensitive customer data, order information, and potentially administrative functions.

Root Cause

The root cause stems from insufficient access control validation within the Adobe Commerce and Magento platforms. The application fails to properly verify user permissions before granting access to protected resources. This weakness allows attackers to craft requests that bypass normal authorization checks, effectively elevating their access beyond intended boundaries.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker can leverage this flaw by sending specially crafted requests to the vulnerable Adobe Commerce or Magento installation. The attack can be executed remotely, making it accessible to any attacker who can reach the target e-commerce platform over the network.

The exploitation approach involves manipulating requests to access protected endpoints or resources that should be restricted based on user role or authentication status. Since no user interaction is required, this vulnerability can be exploited through automated scanning and attack tools.

Detection Methods for CVE-2024-34107

Indicators of Compromise

• Unusual access patterns to administrative or restricted API endpoints from unauthenticated sessions
• Unexpected data access logs showing retrieval of customer or order information without proper authorization
• Anomalous HTTP requests attempting to access protected resources with manipulated parameters
• Evidence of enumeration attempts against customer accounts or order data

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block access control bypass attempts targeting Adobe Commerce/Magento endpoints
• Monitor application access logs for requests to restricted resources from unauthorized sessions or IP addresses
• Deploy intrusion detection signatures that identify common access control bypass patterns in e-commerce applications
• Enable detailed audit logging for all administrative and sensitive data access operations

Monitoring Recommendations

• Configure real-time alerting for failed authorization attempts and suspicious access patterns to admin panels
• Establish baseline access patterns for legitimate users and alert on deviations that may indicate exploitation
• Monitor for bulk data retrieval attempts that could indicate unauthorized access to customer databases
• Review access logs regularly for evidence of privilege escalation or unauthorized resource access

How to Mitigate CVE-2024-34107

Immediate Actions Required

• Update Adobe Commerce to version 2.4.7-p1, 2.4.6-p6, 2.4.5-p8, or 2.4.4-p9 or later immediately
• Apply the security patches referenced in Adobe Security Advisory APSB24-40
• Review access logs to identify any potential exploitation that may have occurred prior to patching
• Implement additional network-level access controls to restrict access to administrative interfaces

Patch Information

Adobe has released security updates addressing this vulnerability in Adobe Security Bulletin APSB24-40. Organizations running affected versions should apply the latest security patches immediately. The patches address the improper access control issue by implementing proper authorization checks for protected resources.

For Adobe Commerce customers:

• Version 2.4.7 users should upgrade to 2.4.7-p1 or later
• Version 2.4.6 users should upgrade to 2.4.6-p6 or later
• Version 2.4.5 users should upgrade to 2.4.5-p8 or later
• Version 2.4.4 users should upgrade to 2.4.4-p9 or later

Workarounds

• Implement strict network segmentation to limit access to Adobe Commerce administrative interfaces to trusted networks only
• Deploy a Web Application Firewall (WAF) with rules configured to detect and block access control bypass attempts
• Temporarily disable any non-essential API endpoints and webhooks until patches can be applied
• Enable enhanced logging and monitoring to detect potential exploitation attempts while working to apply patches

# Example: Restrict admin access via .htaccess (Apache)
# Add to your Adobe Commerce .htaccess file
<FilesMatch "admin">
    Order deny,allow
    Deny from all
    Allow from 10.0.0.0/8
    Allow from 192.168.0.0/16
</FilesMatch>