CVE-2007-4530 in TeamSpeak
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in TeamSpeak Server 2.0.20.1 allow remote attackers to inject arbitrary web script or HTML via (1) the error_text parameter to error_box.html or (2) the ok_title parameter to ok_box.html.
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Analysis
by VulDB Data Team • 07/21/2021
The vulnerability identified as CVE-2007-4530 represents a critical cross-site scripting flaw affecting TeamSpeak Server version 2.0.20.1. This vulnerability falls under the CWE-79 category of Cross-Site Scripting and exposes the system to remote code execution through malicious web script injection. The flaw specifically targets two distinct HTML template files within the TeamSpeak server interface, creating attack vectors that can be exploited by remote unauthenticated adversaries. The vulnerability demonstrates poor input validation and output encoding practices that are fundamental to web application security.
The technical implementation of this vulnerability occurs through two primary attack vectors that leverage the server's error handling mechanisms. The first vector involves the error_text parameter within the error_box.html template, while the second targets the ok_title parameter in the ok_box.html template. Both parameters are processed without proper sanitization or encoding before being rendered in the web interface, allowing attackers to inject malicious JavaScript code or HTML content that executes in the context of other users' browsers. This design flaw enables attackers to bypass the server's intended security boundaries and potentially gain unauthorized access to user sessions.
The operational impact of this vulnerability extends beyond simple script injection, as it can lead to session hijacking, credential theft, and unauthorized access to the TeamSpeak server infrastructure. Attackers can exploit these vectors to create persistent malicious payloads that execute whenever affected users view error or confirmation messages. The vulnerability particularly affects users who are authenticated to the TeamSpeak server, as their sessions could be compromised through the execution of malicious scripts. The attack surface is significant since TeamSpeak servers are commonly used for voice communication in gaming, business, and social environments where user trust and session integrity are paramount.
Mitigation strategies for this vulnerability require immediate implementation of input validation and output encoding controls across all user-supplied parameters. Organizations should implement proper HTML escaping mechanisms for all dynamic content rendered in web interfaces, ensuring that special characters are properly encoded before display. The recommended approach involves applying security patches provided by TeamSpeak, as well as implementing web application firewalls that can detect and block malicious script injection attempts. Additionally, security teams should conduct comprehensive code reviews focusing on parameter handling in template files and establish secure coding practices that align with OWASP Top Ten recommendations. This vulnerability highlights the importance of maintaining up-to-date security protocols and demonstrates the critical need for regular vulnerability assessments in communication server environments. The attack pattern aligns with ATT&CK technique T1059.007 for command and scripting interpreter, where adversaries leverage XSS vulnerabilities to execute malicious scripts in user browsers. Organizations should also implement Content Security Policy headers to limit script execution sources and prevent unauthorized code injection attempts that could exploit similar vulnerabilities in the future.