CVE-2006-3299 in Usenet
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in Usenet Script 0.5 allows remote attackers to inject arbitrary web script or HTML via the group parameter.
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Analysis
by VulDB Data Team • 07/30/2018
The vulnerability identified as CVE-2006-3299 represents a classic cross-site scripting flaw within the Usenet Script 0.5 web application. This issue specifically affects the index.php file and manifests when the group parameter is manipulated by remote attackers. The vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and well-documented web application security weaknesses. The Usenet Script 0.5 platform, designed for managing newsgroup discussions, fails to properly sanitize user input when processing the group parameter, creating an exploitable condition that allows malicious actors to inject arbitrary web scripts or HTML content into the application's response.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing script code within the group parameter and delivers it to unsuspecting users. When the victim's browser loads the malicious page, the injected script executes in the context of the vulnerable application, potentially stealing session cookies, redirecting users to malicious sites, or performing actions on behalf of authenticated users. The vulnerability's impact is amplified by the fact that it operates at the application layer, specifically targeting the input validation mechanisms that should prevent untrusted data from being processed without proper sanitization. This type of vulnerability directly violates the principle of least privilege and input validation best practices that are fundamental to secure web application development.
From an operational perspective, this vulnerability presents significant risks to users of the Usenet Script 0.5 platform, as it can be exploited to perform session hijacking attacks, deface web pages, or redirect users to phishing sites. The attack vector is particularly dangerous because it requires no authentication from the attacker, making it a low-hanging fruit for malicious actors targeting web applications. The vulnerability aligns with ATT&CK technique T1566.001 for initial access through web application attacks, and T1059.007 for command and scripting interpreter execution through script injection. Organizations relying on this software face potential data breaches, reputational damage, and compliance violations, particularly if the application handles sensitive user information or is part of a larger web infrastructure.
The recommended mitigation strategies for this vulnerability involve implementing proper input validation and output encoding mechanisms within the application. Developers should sanitize all user-provided input, particularly parameters like the group parameter, by employing whitelist validation techniques or comprehensive HTML escaping before rendering any user-supplied content. The fix should include implementing Content Security Policy headers to limit script execution contexts and adopting secure coding practices that prevent direct insertion of user data into web pages without proper sanitization. Organizations should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit similar vulnerabilities. Additionally, regular security assessments and code reviews should be conducted to identify and remediate similar input validation flaws that could exist in other application components, as this vulnerability demonstrates a fundamental weakness in the application's data handling procedures that could affect other parameters or functions within the same codebase.