CVE-2006-2177 in geoBlog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in viewcat.php in geoBlog 1.0 allows remote attackers to inject arbitrary web script or HTML via the cat parameter.
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Analysis
by VulDB Data Team • 11/11/2025
The vulnerability identified as CVE-2006-2177 represents a classic cross-site scripting flaw in the geoBlog 1.0 content management system, specifically within the viewcat.php script. This vulnerability resides in the handling of user-supplied input through the cat parameter, which is processed without adequate sanitization or validation mechanisms. The issue stems from the application's failure to properly escape or filter user-provided data before incorporating it into dynamically generated web pages, creating an environment where malicious actors can inject arbitrary HTML or JavaScript code.
The technical implementation of this vulnerability follows a well-established XSS attack pattern where the cat parameter serves as the primary injection vector. When a user submits a value through this parameter, the geoBlog application directly incorporates this input into the page output without proper context-aware encoding or validation. This creates a persistent security risk where attackers can craft malicious payloads that execute in the context of other users' browsers who visit affected pages. The vulnerability classifies under CWE-79 which specifically addresses Cross-Site Scripting flaws, and aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter, particularly focusing on JavaScript execution within web contexts.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it enables attackers to perform session hijacking, redirect users to malicious sites, or execute arbitrary commands within the victim's browser context. An attacker could exploit this vulnerability by constructing a URL with a malicious cat parameter containing JavaScript code that would execute when other users browse to the affected page. This could result in unauthorized access to user accounts, data exfiltration, or the delivery of malware through browser-based attacks. The vulnerability affects the entire geoBlog 1.0 installation and impacts all users who access pages that utilize the viewcat.php script.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms. The most effective approach involves sanitizing all user-supplied input through strict validation and encoding before incorporating it into web page content. This includes implementing context-aware encoding for HTML, JavaScript, and URL contexts. Organizations should also consider implementing Content Security Policy headers to limit the execution of inline scripts and restrict external resource loading. Additionally, the application should be updated to a patched version of geoBlog that addresses this vulnerability, as the original version lacks proper security controls. The fix should involve proper parameter validation, input sanitization, and output encoding to prevent the injection of malicious content into web pages. Regular security testing and code reviews should be implemented to identify similar vulnerabilities in other parts of the application, particularly focusing on areas where user input is directly reflected in web responses.