CVE-2023-26366 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 a Server-Side Request Forgery (SSRF) vulnerability that could lead to arbitrary file system read. A high-privileged authenticated attacker can force the application to make arbitrary requests via injection of arbitrary URLs. Exploitation of this issue does not require user interaction, scope is changed due to the fact that an attacker can enforce file read outside the application's path boundary.
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Analysis
by VulDB Data Team • 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 contain a critical server-side request forgery vulnerability classified as CVE-2023-26366. This vulnerability resides in the application's handling of user-supplied input that is processed as part of HTTP requests, creating a pathway for attackers to manipulate the application's behavior through crafted requests. The flaw stems from insufficient validation of URLs provided by authenticated users, allowing malicious input to be interpreted and executed by the application's underlying HTTP client components. This vulnerability falls under the Common Weakness Enumeration category CWE-918, which specifically addresses server-side request forgery vulnerabilities where applications fail to properly validate and sanitize external URL inputs. The attack vector requires a high-privileged authenticated user context, meaning that an attacker must first obtain valid credentials with sufficient permissions to leverage this vulnerability effectively. The exploitation process involves injecting malicious URLs into application parameters that are then processed by the server, enabling the attacker to make arbitrary requests to internal systems or external endpoints that should normally be inaccessible.
The operational impact of this vulnerability extends beyond simple data exfiltration, as it enables arbitrary file system read operations that can bypass normal path boundary restrictions. An attacker with access to the application's authenticated session can force the system to read files from locations outside the intended application scope, potentially accessing sensitive configuration files, database credentials, application source code, or other critical system resources. The vulnerability's severity is amplified by the fact that exploitation does not require user interaction, making it particularly dangerous as it can be automated and executed silently in the background. The SSRF mechanism allows attackers to traverse the file system and potentially access files that would normally be restricted by the application's security boundaries, effectively breaking down the application's intended isolation mechanisms. This type of vulnerability aligns with the attack pattern described in the MITRE ATT&CK framework under the technique T1071.004 for application layer protocol, specifically targeting web application vulnerabilities that allow for unauthorized access to system resources. The ability to read arbitrary files from the file system creates a significant risk for data leakage and can provide attackers with information necessary for further exploitation, including database connection details, private keys, or other sensitive configuration data.
Organizations running affected Adobe Commerce versions should prioritize immediate remediation through official patches provided by Adobe, as the vulnerability presents a substantial risk to system integrity and data security. The recommended mitigation strategy includes applying the latest security updates from Adobe Commerce, which typically address the input validation issues by implementing proper URL sanitization and validation mechanisms. Additionally, implementing network-level restrictions and firewall rules to limit outbound connections from the application server can help reduce the potential impact of successful exploitation attempts. Security teams should also consider implementing monitoring solutions that can detect anomalous outbound requests or unusual file access patterns that might indicate exploitation attempts. The vulnerability's classification as a high-privileged authenticated attack means that organizations should review and strengthen their access control measures, including implementing multi-factor authentication and regular privilege reviews. Network segmentation and the principle of least privilege should be enforced to minimize the potential damage if an attacker does gain access to a valid account. Regular security assessments and penetration testing should be conducted to identify and remediate similar vulnerabilities in the application's codebase. The vulnerability's impact on file system access highlights the importance of proper file permission settings and regular security audits of the application's file structure to ensure that sensitive data remains protected even if the application is compromised.