CVE-2005-2899 in Cj Tag Board
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in details.php in CjTagBoard 3.0 allow remote attackers to inject arbitrary web script or HTML via the (1) date, (2) time, (3) name, (4) ip, (5) agent, or (6) msg parameter.
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Analysis
by VulDB Data Team • 07/28/2017
The vulnerability identified as CVE-2005-2899 represents a critical cross-site scripting flaw in the CjTagBoard 3.0 web application's details.php script. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a prevalent security weakness that allows attackers to inject malicious client-side scripts into web applications. The affected application processes user input through multiple parameters without proper sanitization, creating multiple attack vectors that can be exploited by remote adversaries.
The technical implementation of this vulnerability occurs within the details.php script where the application fails to properly validate and sanitize incoming data from various HTTP parameters. Specifically, attackers can manipulate six distinct input fields including date, time, name, ip, agent, and msg parameters to inject malicious scripts. This weakness stems from the application's inadequate input filtering mechanisms and lack of proper output encoding for dynamic content. When users view the affected pages, the injected scripts execute in the context of other users' browsers, potentially leading to session hijacking, data theft, or unauthorized actions performed on behalf of victims.
The operational impact of this vulnerability extends beyond simple script injection, as it creates a persistent security risk that can be exploited across multiple user sessions. Attackers can craft malicious payloads that persistently compromise user sessions, steal authentication cookies, or redirect users to malicious websites. The vulnerability's remote nature means that attackers do not require physical access to the system or local network privileges to exploit the weakness. This makes the attack surface particularly broad and the risk assessment elevated, as any user interacting with the vulnerable application could become a victim of the XSS attack.
Security mitigations for this vulnerability should focus on implementing comprehensive input validation and output encoding strategies. The most effective approach involves sanitizing all user-supplied input through proper validation routines that reject or escape potentially dangerous characters and script tags. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against script execution. The application should also employ proper output encoding for all dynamic content, ensuring that user data is rendered safely in HTML contexts. Organizations should consider implementing web application firewalls and regular security code reviews to prevent similar vulnerabilities in future development cycles. This vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious links and demonstrates the importance of input validation as outlined in OWASP Top Ten category A03:2021 - Injection.