CVE-2019-8229 in Magento
Summary
by MITRE
In Magento prior to 1.9.4.3, and Magento prior to 1.14.4.3, an authenticated user with administrative privileges to edit product attributes can execute arbitrary code through crafted layout updates.
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Analysis
by VulDB Data Team • 02/04/2024
This vulnerability exists within the Magento e-commerce platform where an authenticated administrator with privileges to edit product attributes can leverage a code execution flaw through manipulated layout updates. The vulnerability stems from insufficient input validation and sanitization of layout XML data that is processed during product attribute modifications. When administrators edit product attributes, the system processes layout updates that are not adequately sanitized, creating an opportunity for malicious code injection. The flaw specifically affects Magento versions prior to 1.9.4.3 and 1.14.4.3, indicating this was a persistent issue across multiple release branches. This vulnerability aligns with CWE-94, which describes improper control of generation of code, and represents a critical code injection vulnerability that can be exploited through the administrative interface. The attack vector requires an existing administrative account, making it a privilege escalation issue rather than a remote code execution vulnerability.
The operational impact of this vulnerability is severe as it allows attackers who have gained administrative access to execute arbitrary code on the affected Magento server. This code execution capability can lead to complete system compromise, data exfiltration, and persistence mechanisms. Attackers can leverage this vulnerability to install backdoors, modify product catalogs, access customer data, and potentially escalate privileges further within the network. The vulnerability's exploitation requires minimal additional attack surface beyond existing administrative access, making it particularly dangerous in environments where administrative credentials might be compromised through other means. This issue demonstrates poor input validation practices in the Magento platform's layout processing system, where user-supplied XML data is not properly escaped or validated before being processed by the application.
The security implications extend beyond immediate code execution as this vulnerability can be used as a foothold for further attacks within the Magento environment. Once executed, malicious code can access the application's database, modify user accounts, or establish persistent access through various techniques including web shell deployment. The vulnerability's presence in both major Magento branches indicates a systemic issue in how layout updates are handled across the platform's architecture. Organizations using affected Magento versions face significant risk of data breaches, service disruption, and potential regulatory compliance violations. The vulnerability can be exploited through standard administrative interfaces, making detection more challenging as legitimate administrative activity may mask malicious actions. This issue also highlights the importance of input validation and proper sanitization of all user-supplied data, particularly in systems that process XML or similar structured data formats.
Organizations should immediately upgrade to Magento versions 1.9.4.3 or 1.14.4.3 to remediate this vulnerability. Additionally, implementing network segmentation, access controls, and monitoring of administrative activities can help detect and prevent exploitation attempts. Regular security audits should verify that layout update functionality properly sanitizes all user input and that administrative accounts maintain strong authentication mechanisms. The vulnerability serves as a reminder of the critical importance of validating and sanitizing all input data, particularly in administrative interfaces where privilege levels are elevated. Security teams should also consider implementing web application firewalls and monitoring for suspicious XML content in layout update requests to detect potential exploitation attempts. This vulnerability demonstrates the need for comprehensive security testing of all code paths that handle user-supplied data, especially in systems where administrative privileges can lead to system-wide compromise.