Adobe Commerce | Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)

Vulnerability

Overview

A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability exists in Adobe Commerce versions 2.4.9-alpha1, 2.4.8-p1, 2.4.7-p6, 2.4.6-p11, 2.4.5-p13, 2.4.4-p14 and earlier [1]. This flaw occurs when the software checks a resource's state but then uses that resource after a timing window during which the state can be altered, leading to a security feature bypass [1].

Exploitation

Method

An attacker can exploit this race condition by manipulating the timing between a resource state check and its subsequent use, which does not require user interaction [1]. While the description does not specify authentication requirements, TOCTOU vulnerabilities in e-commerce platforms typically require authenticated access to trigger the condition. The GitHub repository for Magento Open Source provides the codebase where such race conditions can be analyzed [2].

Impact

Successful exploitation grants an attacker unauthorized write access to resources that should be protected by security features [1]. This could allow modification of sensitive data, bypass of access controls, or injection of malicious content within the application.

Mitigation

Adobe has released security updates addressing this vulnerability in the latest patch versions. Users should upgrade to the appropriate patched version (e.g., 2.4.9-beta1 or later) as specified in Adobe's security bulletin. No workarounds are documented.