CVE-2017-7391 in magmi
Summary
by MITRE
A Cross-Site Scripting (XSS) was discovered in 'Magmi 0.7.22'. The vulnerability exists due to insufficient filtration of user-supplied data (prefix) passed to the 'magmi-git-master/magmi/web/ajax_gettime.php' URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.
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Analysis
by VulDB Data Team • 11/24/2022
The vulnerability identified as CVE-2017-7391 represents a critical cross-site scripting flaw within the Magmi 0.7.22 web application framework. This vulnerability specifically affects the ajax_gettime.php endpoint which processes user-supplied data through a parameter named prefix. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly filter malicious content submitted by attackers. The vulnerability is classified under CWE-79 as a failure to sanitize user input before incorporating it into dynamic web content, making it susceptible to injection attacks that can compromise user sessions and execute unauthorized code within the browser context of legitimate users.
The technical exploitation of this vulnerability occurs when an attacker submits malicious data through the prefix parameter to the vulnerable endpoint. The application fails to implement proper output encoding or input validation measures, allowing the malicious payload to be executed as part of the web response. This creates a persistent XSS vector where attackers can inject HTML and JavaScript code that executes in the context of the victim's browser session. The vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter execution, specifically targeting the browser environment through script injection. The attack chain typically involves crafting malicious payloads that leverage the unfiltered input to perform actions such as cookie theft, session hijacking, or redirection to malicious sites.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable comprehensive session hijacking and data exfiltration attacks. When successful, attackers can impersonate legitimate users, access sensitive information, modify data, or perform unauthorized transactions within the application context. The vulnerability particularly affects e-commerce and inventory management systems that rely on Magmi for data processing, potentially compromising entire user bases and business operations. Organizations using this version of Magmi face significant risk of credential theft, data manipulation, and potential lateral movement within their network infrastructure. The vulnerability's impact is amplified by the fact that it affects a core web application component that likely handles multiple user interactions and data processing functions.
Mitigation strategies for CVE-2017-7391 should prioritize immediate patching of the Magmi application to version 0.7.23 or later, which contains the necessary input validation fixes. Organizations should implement comprehensive input sanitization measures including proper output encoding of all user-supplied data before rendering in web responses. The implementation of Content Security Policy headers can provide additional protection against script execution, while regular security audits of web applications should include thorough input validation testing. Network monitoring solutions should be configured to detect and alert on suspicious script injection patterns. Additionally, organizations should consider implementing web application firewalls to filter malicious requests before they reach the vulnerable application components. The remediation process should include comprehensive testing to ensure that all input parameters are properly validated and that no similar vulnerabilities exist within the application's codebase, following security best practices outlined in OWASP Top 10 and NIST Cybersecurity Framework guidelines.