CVE-2006-7022 in fx-APP
Summary
by MITRE
The Tools module in fx-APP 0.0.8.1 allows remote attackers to misrepresent the contents of a web page via an arbitrary URL in the url parameter to a showhtml action for index.php, which causes the URL to be displayed within an iframe.
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Analysis
by VulDB Data Team • 08/19/2018
The vulnerability described in CVE-2006-7022 affects the Tools module within fx-APP version 0.0.8.1, presenting a significant security risk through improper input validation and output handling. This flaw exists in the showhtml action of index.php where the application fails to properly sanitize or validate the url parameter before incorporating it into an iframe element. The vulnerability enables remote attackers to manipulate the web page content presentation by injecting arbitrary URLs that are then rendered within embedded frames, potentially allowing for malicious content delivery or phishing attacks.
This security weakness represents a classic case of insecure direct object reference and cross-site scripting vulnerabilities, with the underlying technical flaw residing in the application's failure to implement proper input validation and output encoding mechanisms. The vulnerability falls under CWE-20, which addresses improper input validation, and also relates to CWE-79, dealing with cross-site scripting issues. The improper handling of user-supplied input in the url parameter creates an environment where attackers can inject malicious URLs that will be displayed in iframe contexts, potentially leading to unauthorized content presentation.
The operational impact of this vulnerability extends beyond simple content misrepresentation, as it can be exploited to create sophisticated phishing attacks or deliver malicious payloads through the iframe mechanism. When an attacker crafts a malicious URL and passes it through the vulnerable parameter, the application renders this URL within an iframe, which can potentially bypass security measures that might otherwise protect against direct malicious content delivery. This creates a vector for social engineering attacks where users might be tricked into believing they are viewing legitimate content while actually interacting with malicious sites.
The attack surface for this vulnerability is particularly concerning as it allows for arbitrary URL injection through a simple parameter manipulation, making it accessible to attackers with minimal technical expertise. The iframe-based execution context provides additional attack vectors including potential for clickjacking scenarios where users might be misled into performing unintended actions on the malicious site. Security professionals should note that this vulnerability demonstrates a fundamental lack of proper security controls in the application's input handling mechanisms, making it a critical concern for any organization using this specific version of fx-APP.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding controls. The application must validate all user-supplied URLs against a whitelist of approved domains or implement strict URL format validation to prevent injection of malicious content. Additionally, proper output encoding should be implemented when rendering URLs within iframe contexts to prevent XSS attacks. Organizations should also consider implementing Content Security Policy headers to restrict iframe loading sources and prevent unauthorized content embedding. The recommended remediation involves upgrading to a patched version of fx-APP or implementing proper parameter sanitization and validation controls that align with OWASP secure coding practices and the ATT&CK framework's mitigation recommendations for web application vulnerabilities.