CVE-2017-6397 in FlightAirMap
Summary
by MITRE
An issue was discovered in FlightAirMap v1.0-beta.10. The vulnerability exists due to insufficient filtration of user-supplied data in multiple parameters passed to several *-sub-menu.php pages. 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 • 09/03/2020
The vulnerability identified as CVE-2017-6397 affects FlightAirMap version 1.0-beta.10, representing a critical cross-site scripting flaw that stems from inadequate input validation mechanisms. This weakness resides within the application's handling of user-supplied data across multiple submenu pages, specifically targeting parameters that are processed through various *-sub-menu.php endpoints. The insufficient filtration allows malicious actors to inject arbitrary HTML and script code into the application's response, creating a persistent security risk that can be exploited across different browser contexts.
This vulnerability aligns with CWE-79, which categorizes cross-site scripting as a fundamental web application security flaw occurring when applications fail to properly validate or escape user input before incorporating it into dynamic content. The attack vector specifically targets the application's parameter processing mechanisms, where user-supplied data is directly rendered without appropriate sanitization or encoding measures. The flaw exists in the server-side processing logic that fails to implement proper input validation, output encoding, or context-aware escaping techniques essential for preventing malicious code execution.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to perform session hijacking, deface the application interface, redirect users to malicious sites, or execute unauthorized actions on behalf of legitimate users. When exploited, the vulnerability can compromise the integrity of the web application and potentially lead to broader system compromise if the application lacks proper access controls or additional security measures. The persistent nature of the flaw means that successful exploitation can affect multiple users over time, as the injected code remains active within the vulnerable application's pages.
Mitigation strategies for CVE-2017-6397 should focus on implementing comprehensive input validation and output encoding mechanisms across all user-supplied parameters. The recommended approach includes enforcing strict whitelisting of acceptable input values, implementing proper HTML entity encoding for all dynamic content, and utilizing context-specific escaping techniques for different output contexts such as HTML, JavaScript, and URL parameters. Additionally, the application should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. This vulnerability also highlights the importance of following secure coding practices aligned with OWASP Top Ten recommendations and adhering to the principle of least privilege in web application development. Organizations should prioritize updating to patched versions of FlightAirMap and conducting thorough security assessments of similar applications that may exhibit similar input validation weaknesses.
The attack surface for this vulnerability can be expanded through various exploitation techniques including persistent XSS attacks where malicious code is stored server-side and executed for multiple users, or reflected XSS where the malicious input is immediately reflected back to the user. Security professionals should consider implementing web application firewalls and intrusion detection systems to monitor for suspicious parameter patterns that may indicate attempted exploitation of this vulnerability. Regular security audits and penetration testing should specifically target input validation mechanisms to identify and remediate similar weaknesses in other application components.