CVE-2006-1562 in VBook
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in index.php in vscripts (aka Kuba Kunkiewicz) [V]Book (aka VBook) 2.0 allow remote attackers to inject arbitrary web script or HTML via the (1) autor, (2) www, (3) temat, and (4) tresc parameters.
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Analysis
by VulDB Data Team • 09/01/2017
The vulnerability identified as CVE-2006-1562 represents a critical cross-site scripting flaw within the vscripts component of VBook 2.0, a web-based application developed by Kuba Kunkiewicz. This vulnerability manifests in the index.php file where multiple input parameters fail to properly sanitize user-supplied data, creating an attack surface that allows remote threat actors to execute malicious scripts within the context of victim sessions. The flaw specifically affects four distinct parameters including autor, www, temat, and tresc, which are processed without adequate validation or encoding mechanisms, making the application susceptible to persistent XSS attacks.
The technical implementation of this vulnerability stems from improper input handling within the web application's core processing logic. When user-supplied data is directly incorporated into dynamic web content without proper sanitization, it creates an environment where attackers can inject malicious JavaScript code or HTML content. This type of vulnerability falls under CWE-79, which specifically addresses cross-site scripting flaws in web applications. The vulnerability is classified as a reflected XSS issue since the malicious input is processed and reflected back to users without proper encoding, allowing the injected scripts to execute in the victim's browser context.
The operational impact of CVE-2006-1562 extends beyond simple data theft or session hijacking, as it provides attackers with the capability to manipulate the entire user experience within the vulnerable application. Attackers can leverage this vulnerability to perform session fixation, steal cookies, redirect users to malicious sites, or even modify the application's interface to deceive users. The attack vector is particularly concerning because it operates entirely through web-based interactions, requiring no special privileges or local access to the target system. According to ATT&CK framework category T1059, this vulnerability enables adversaries to execute arbitrary code in the victim's browser context, while T1531 specifically addresses the exploitation of web application vulnerabilities for privilege escalation and data manipulation.
Mitigation strategies for this vulnerability must address the fundamental flaw in input validation and sanitization practices within the VBook application. The primary remediation involves implementing comprehensive input validation and output encoding for all user-supplied parameters, particularly the four identified vulnerable fields. Organizations should employ strict parameter validation using allowlists of acceptable characters and lengths, combined with proper HTML encoding of all dynamic content before rendering. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded. The vulnerability also highlights the importance of regular security assessments and code reviews, as this type of flaw typically emerges from insufficient attention to secure coding practices during application development phases, aligning with CWE-699's emphasis on secure coding methodologies and defensive programming techniques.