CVE-2009-4344 in ZID Linklist
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the ZID Linkliste (zid_linklist) extension 1.0.0 for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 12/17/2017
The CVE-2009-4344 vulnerability represents a critical cross-site scripting flaw within the ZID Linkliste extension version 1.0.0 for the TYPO3 content management system. 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 vulnerability specifically affects the zid_linklist extension, which is designed to manage and display link lists within TYPO3 websites, making it a potential vector for malicious code injection that could compromise user sessions and data integrity.
The technical implementation of this XSS vulnerability occurs through unspecified input vectors within the extension's processing mechanisms. When users interact with the link list functionality, the extension fails to properly sanitize or encode user-supplied input before rendering it in web pages. This allows attackers to inject malicious scripts that execute in the context of other users' browsers who view the affected content. The vulnerability's impact is amplified by the widespread use of TYPO3 as a web publishing platform, where the zid_linklist extension may be deployed across numerous websites without proper security hardening.
From an operational standpoint, this vulnerability creates significant risks for organizations using TYPO3 with the affected extension. Attackers could exploit this flaw to steal user session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or even deface the compromised websites. The remote nature of the attack means that exploitation does not require any local system access or user interaction beyond visiting a maliciously crafted page. This makes the vulnerability particularly dangerous in environments where users have administrative privileges or where the extension is used to display sensitive information.
The mitigation strategy for CVE-2009-4344 primarily involves immediate patching of the affected TYPO3 extension to version 1.0.1 or later, which contains the necessary input validation and output encoding fixes. Organizations should also implement comprehensive input sanitization measures, including the use of proper HTML escaping and content security policies to prevent script execution. Additionally, regular security assessments of third-party extensions and maintaining up-to-date software versions aligns with ATT&CK framework tactics related to privilege escalation and defense evasion. The vulnerability demonstrates the critical importance of secure coding practices in web applications and the necessity of validating all user inputs against known attack patterns to prevent XSS exploitation attempts.