CVE-2023-26367 in Commerce
Summary
by MITRE • 10/25/2023
Adobe Commerce versions 2.4.7-beta1 (and earlier), 2.4.6-p2 (and earlier), 2.4.5-p4 (and earlier) and 2.4.4-p5 (and earlier) are affected by an Improper Input Validation vulnerability that could lead to arbitrary file system read by an admin-privilege authenticated attacker. Exploitation of this issue does not require user interaction.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 10/25/2023
Adobe Commerce suffers from a critical improper input validation vulnerability that allows authenticated administrators to perform arbitrary file system reads through a flaw in the application's parameter handling mechanisms. This vulnerability exists in multiple version ranges including 2.4.7-beta1 and earlier, 2.4.6-p2 and earlier, 2.4.5-p4 and earlier, and 2.4.4-p5 and earlier, representing a significant security risk for organizations utilizing these commerce platforms. The flaw specifically manifests when the application processes user-supplied input without adequate validation, allowing malicious parameters to traverse the file system and access restricted files. Attackers with administrative privileges can exploit this weakness to read sensitive files such as configuration files, database credentials, application source code, and other potentially sensitive data stored on the server. The vulnerability is particularly dangerous because it requires no user interaction and can be exploited by authenticated attackers who already possess administrative access, making it a severe privilege escalation concern. This type of vulnerability is categorized under CWE-20, Improper Input Validation, which is a fundamental security weakness that affects numerous applications and systems. The attack pattern aligns with ATT&CK technique T1078.004, Valid Accounts, as it leverages existing administrative credentials to perform unauthorized file system operations. The impact extends beyond simple data theft, as attackers could potentially discover sensitive information that could be used for further exploitation or lateral movement within the network. Organizations running affected versions of Adobe Commerce should immediately implement mitigations including applying the latest security patches, implementing strict input validation controls, and monitoring for suspicious administrative activities that might indicate exploitation attempts.
The vulnerability's exploitation potential is amplified by the fact that it operates entirely within the application's legitimate administrative interface, making detection more challenging for security monitoring systems. Attackers can craft specific requests that bypass normal access controls and retrieve files that should otherwise be restricted to authorized personnel only. This flaw represents a failure in the principle of least privilege, where administrative functions should be properly sandboxed and validated against expected input parameters. The vulnerability's persistence across multiple minor versions indicates a fundamental flaw in the application's input handling that was not adequately addressed during the development cycle. Security researchers have identified that the issue stems from inadequate sanitization of file path parameters, allowing attackers to manipulate input values to traverse directory structures and access files outside the intended scope. This weakness is particularly concerning for e-commerce environments where sensitive data such as customer information, payment details, and business-critical configuration files may be accessible through this vulnerability. The lack of user interaction requirement means that once an attacker gains administrative access, they can immediately begin exploiting this vulnerability without additional social engineering or complex attack chains. Organizations should consider implementing additional security controls such as web application firewalls, input validation rules, and regular security scanning to detect and prevent exploitation attempts.
Organizations should prioritize immediate remediation efforts by upgrading to patched versions of Adobe Commerce that address this specific vulnerability. The security patch released by Adobe addresses the input validation gap by implementing proper parameter sanitization and validation mechanisms that prevent path traversal attacks. Additionally, administrators should review and implement strict access control policies, ensuring that administrative privileges are granted only to trusted individuals and that regular privilege reviews are conducted. Network monitoring should be enhanced to detect unusual file system access patterns that might indicate exploitation attempts, particularly those involving administrative accounts. The vulnerability also highlights the importance of maintaining up-to-date security practices and conducting regular vulnerability assessments to identify similar weaknesses in other applications and systems. Organizations should also consider implementing automated security scanning tools that can detect and alert on potential exploitation attempts targeting this type of vulnerability. Proper logging and audit trail mechanisms should be enabled to track administrative activities and identify any unauthorized file access attempts. The incident serves as a reminder of the critical importance of input validation in web applications and the potential consequences of inadequate security controls in privileged administrative interfaces. Security teams should also conduct regular training to ensure administrators understand the risks associated with this type of vulnerability and the importance of following security best practices when handling administrative access.