CVE-2006-6389 in ac4p Mobile
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in ac4p Mobile allow remote attackers to inject arbitrary web script or HTML via the (1) Taaa parameter to (a) up.php, or the (2) pollhtml and (3) Bloks parameters to (b) polls.php, different vectors than CVE-2006-5770.
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Analysis
by VulDB Data Team • 06/16/2025
The vulnerability identified as CVE-2006-6389 represents a critical cross-site scripting flaw within the ac4p Mobile application, specifically affecting the up.php and polls.php components. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a fundamental web application security weakness that allows attackers to inject malicious client-side scripts into web pages viewed by other users. The flaw manifests through three distinct parameter injection points that collectively represent different attack vectors, making this vulnerability particularly concerning for organizations relying on the affected mobile application platform.
The technical implementation of this vulnerability occurs when the ac4p Mobile application fails to properly sanitize or validate user input received through specific HTTP parameters. The first attack vector involves the Taaa parameter in the up.php file, while the second and third vectors target the pollhtml and Bloks parameters respectively in the polls.php file. These parameters are processed without adequate input validation, allowing malicious actors to inject arbitrary HTML or JavaScript code that executes in the context of other users' browsers. The vulnerability is classified as a stored XSS issue when the injected scripts are permanently stored and served to other users, or as a reflected XSS when the malicious code is immediately reflected back to the user through the application's response.
The operational impact of CVE-2006-6389 extends beyond simple data theft or session hijacking, as it provides attackers with the capability to manipulate the entire user experience within the mobile application environment. Successful exploitation could enable attackers to steal user credentials, conduct session hijacking attacks, redirect users to malicious websites, or even modify the application's functionality. The vulnerability's presence in mobile applications is particularly dangerous as it can compromise user privacy and potentially provide attackers with access to sensitive information stored within the mobile device or transmitted through the application. From an attacker's perspective, this vulnerability represents a low-effort, high-impact vector that could be exploited at scale given the mobile application's user base.
Security practitioners should implement immediate mitigations including input validation and output encoding for all user-supplied parameters, particularly those processed by the affected PHP scripts. The recommended approach involves implementing strict parameter validation that rejects or sanitizes any input containing potentially malicious script content. Additionally, implementing Content Security Policy headers can provide an additional layer of defense against XSS attacks by restricting the sources from which scripts can be loaded. Organizations should also consider implementing proper web application firewalls to detect and block suspicious parameter values before they reach the vulnerable application components. The vulnerability's classification under the ATT&CK framework would place it within the T1059.007 technique category, which covers scripting through web shell commands, and represents a critical weakness that requires immediate remediation to prevent potential exploitation by threat actors targeting mobile web applications.