CVE-2012-5102 in VertrigoServ
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in inc/extensions.php in VertrigoServ 2.25 allows remote attackers to inject arbitrary web script or HTML via the ext parameter.
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Analysis
by VulDB Data Team • 05/26/2025
The CVE-2012-5102 vulnerability represents a critical cross-site scripting flaw identified in VertrigoServ 2.25, specifically within the inc/extensions.php component. This vulnerability resides in the web server environment that was commonly used for local development and testing purposes, making it particularly concerning given the widespread adoption of such tools among developers and system administrators. The flaw manifests when the application fails to properly sanitize user input passed through the ext parameter, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding mechanisms within the VertrigoServ application framework. When a user submits data through the ext parameter, the system does not adequately filter or escape special characters that could be interpreted as HTML or JavaScript code. This allows attackers to craft malicious payloads that, when processed by the application, get executed in the browser context of unsuspecting users who visit the affected page. The vulnerability operates under the Common Weakness Enumeration classification of CWE-79, which specifically addresses Cross-Site Scripting flaws, making it a well-documented and widely recognized security weakness in web applications.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can enable more sophisticated attack vectors within the context of the compromised environment. An attacker could leverage this vulnerability to steal session cookies, redirect users to malicious sites, or even inject malware delivery mechanisms that could compromise the entire development environment. The implications are particularly severe in enterprise settings where developers might be running local servers with elevated privileges or access to sensitive development data, potentially allowing attackers to escalate their compromise beyond the initial XSS vector. This vulnerability aligns with ATT&CK technique T1566.001, which covers the use of web shell delivery through malicious scripts, and demonstrates how seemingly minor input validation flaws can create significant security risks.
Mitigation strategies for CVE-2012-5102 should focus on implementing proper input sanitization and output encoding practices within the application. Developers should employ parameterized queries and strict input validation to prevent malicious content from being processed as executable code. The recommended approach involves implementing comprehensive sanitization routines that strip or encode potentially dangerous characters before any user input is processed or displayed. Additionally, organizations should consider implementing Content Security Policy (CSP) headers to limit the execution of inline scripts and reduce the impact of potential XSS attacks. Given that VertrigoServ 2.25 is an outdated product, the most effective long-term solution involves migrating to modern, supported web server environments that have robust built-in protections against such vulnerabilities, while also ensuring regular security updates and patches are applied to maintain defense in depth.