CVE-2005-3512 in VUBB
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in VUBB alpha rc1 allows remote attackers to inject arbitrary web script or HTML via the t parameter in a newreply action.
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Analysis
by VulDB Data Team • 12/29/2025
The vulnerability identified as CVE-2005-3512 represents a classic cross-site scripting flaw within the VUBB alpha rc1 bulletin board software, specifically affecting the index.php file during newreply actions. This vulnerability operates under the broader category of CWE-79 which defines improper neutralization of input during web page generation, making it a critical concern for web application security. The flaw manifests when the application fails to properly sanitize user input received through the t parameter, allowing malicious actors to inject arbitrary web scripts or HTML content directly into the application's response. This particular implementation exposes the system to attacks where an attacker can manipulate the t parameter to execute malicious code within the context of other users' browsers, potentially leading to session hijacking, data theft, or unauthorized actions performed on behalf of legitimate users.
The technical exploitation of this vulnerability occurs when the VUBB application processes user input without adequate validation or sanitization mechanisms. During the newreply action, the application accepts the t parameter and incorporates it directly into the generated HTML response without proper encoding or filtering. This creates an environment where malicious payloads can be executed in the browser context of other users who view the affected content. The vulnerability specifically targets the application's failure to implement proper input validation, which is a fundamental security control recommended by industry standards including the OWASP Top Ten and the SANS Institute's Critical Security Controls. The flaw allows attackers to craft payloads that can persist within the application's data storage and execute whenever other users access the affected pages, making it particularly dangerous for community-driven platforms where user-generated content is prevalent.
The operational impact of this vulnerability extends beyond simple script execution to encompass significant security risks for organizations utilizing the VUBB platform. Attackers can leverage this vulnerability to steal session cookies, redirect users to malicious sites, deface the bulletin board interface, or perform actions as authenticated users within the application. The persistence of the vulnerability means that once exploited, the malicious content can affect multiple users over time until the application is patched or the affected data is manually removed. This vulnerability directly maps to ATT&CK technique T1566.001 which describes the use of malicious links or content to execute code in the context of a user's browser session. The impact is particularly severe for bulletin board systems where user trust is paramount, as the malicious content can appear to originate from legitimate users, making it difficult for end users to distinguish between authentic and malicious content.
Mitigation strategies for CVE-2005-3512 require immediate implementation of proper input validation and output encoding mechanisms within the VUBB application. Organizations should implement strict parameter validation for all user inputs, particularly those used in dynamic content generation, and ensure that all output is properly encoded according to the context in which it will be displayed. The recommended approach involves implementing a whitelist-based input validation system that only accepts known good characters and patterns while rejecting potentially dangerous content. Additionally, developers should implement proper HTML encoding for all dynamic content before rendering it in web pages, which would prevent malicious scripts from executing even if injected into the application. The fix should also include regular security auditing of input handling mechanisms and implementation of automated testing to detect similar vulnerabilities in other parts of the application. Organizations should also consider implementing content security policies to add an additional layer of protection against XSS attacks, as recommended by the W3C specification for web application security.