CVE-2006-1893 in ar-blog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in print.php in ar-blog 5.2 allows remote attackers to inject arbitrary web script or HTML via the id parameter.
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Analysis
by VulDB Data Team • 07/05/2025
The vulnerability identified as CVE-2006-1893 represents a classic cross-site scripting flaw within the ar-blog 5.2 content management system, specifically affecting the print.php script. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79 which defines improper neutralization of input during web page generation as a critical security weakness. The vulnerability manifests when the application fails to properly sanitize user-supplied input before incorporating it into dynamically generated web pages, creating an avenue for malicious code injection.
The technical flaw resides in the print.php script's handling of the id parameter, which serves as an entry point for attackers to inject arbitrary web script or HTML content. When users navigate to the print functionality and provide a malicious id parameter, the application directly incorporates this unsanitized input into the output page without proper validation or encoding mechanisms. This oversight allows attackers to execute scripts 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 execution, as it enables attackers to manipulate the user experience and potentially escalate privileges within the application's context. Attackers can craft malicious URLs containing script tags that execute when victims access the print page, creating persistent XSS vectors that can be used to steal cookies, redirect users to malicious sites, or perform actions within the application's interface. The vulnerability affects the confidentiality, integrity, and availability of the system by allowing unauthorized code execution and potential data exfiltration.
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 proper encoding before incorporating it into web page content, specifically implementing HTML entity encoding for the id parameter. Additionally, developers should implement a whitelist-based input validation approach that only accepts expected parameter values and reject any input that does not conform to predefined patterns. The solution aligns with the ATT&CK framework's mitigation strategies for web application vulnerabilities, particularly focusing on input validation and output encoding techniques that prevent malicious code execution in web contexts. Organizations should also consider implementing Content Security Policy headers to provide additional defense-in-depth against XSS attacks by restricting script execution sources.