CVE-2006-6695 in TextSend
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in index.php in Carsen Klock TextSend 1.5 allow remote attackers to inject arbitrary web script or HTML via the (1) error or (2) success parameter. NOTE: The provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 08/12/2018
The vulnerability identified as CVE-2006-6695 represents a critical cross-site scripting flaw in the Carsen Klock TextSend 1.5 web application. This vulnerability resides within the index.php file and affects the application's handling of user input through specific parameter names. The flaw allows remote attackers to execute malicious web scripts or HTML code within the context of other users' browsers, creating a significant security risk for anyone interacting with the vulnerable system. The vulnerability specifically impacts two parameters named error and success, which are likely used to display status messages or error notifications to users after form submissions or other interactions.
This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security flaws. The technical implementation of this vulnerability demonstrates a classic failure in input validation and output encoding within the web application's user interface. When the application processes the error or success parameters without proper sanitization or encoding, it directly incorporates user-supplied data into the HTML response without adequate protection mechanisms. This creates an environment where attackers can inject malicious scripts that will execute in the browsers of unsuspecting victims who view the affected pages.
The operational impact of this vulnerability extends beyond simple data theft or defacement. An attacker could leverage this flaw to perform session hijacking, redirect users to malicious websites, steal sensitive information from authenticated sessions, or even deliver malware through drive-by downloads. The remote nature of the attack means that exploitation does not require any local access to the system, making it particularly dangerous for web applications that handle sensitive user data or business-critical information. Users who interact with the TextSend 1.5 application could unknowingly become victims of these attacks simply by visiting pages that contain maliciously crafted URLs with the vulnerable parameters.
Security professionals should implement multiple layers of defense to mitigate this vulnerability. The primary mitigation involves implementing proper input validation and output encoding for all user-supplied data, particularly parameters that are rendered directly in web pages. This includes sanitizing the error and success parameters before they are processed and displayed to users, ensuring that any potentially malicious script content is neutralized or escaped. Additionally, implementing a Content Security Policy (CSP) can provide an additional layer of protection by restricting the sources from which scripts can be executed within the application's context. Organizations should also consider implementing web application firewalls that can detect and block suspicious parameter values that match known XSS attack patterns. The remediation process should include thorough code review and testing to ensure that all input parameters are properly validated and that output encoding is consistently applied throughout the application's user interface components.