CVE-2009-2114 in SkyBlueCanvas
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in admin.php in SkyBlueCanvas 1.1 r237 allow remote attackers to inject arbitrary web script or HTML via the (1) mgroup, (2) mgr, (3) objtype, (4) id, and (5) dir parameters.
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Analysis
by VulDB Data Team • 08/21/2025
The vulnerability identified as CVE-2009-2114 represents a critical cross-site scripting flaw discovered in SkyBlueCanvas content management system version 1.1 r237. This security weakness resides within the admin.php administrative interface component and affects multiple parameter fields including mgroup, mgr, objtype, id, and dir. The vulnerability classification aligns with CWE-79 which specifically addresses cross-site scripting vulnerabilities where untrusted data is improperly incorporated into web pages without proper sanitization or encoding mechanisms. This particular flaw demonstrates a classic input validation failure where user-supplied parameters are directly reflected in the application's output without adequate security controls.
The technical exploitation of this vulnerability occurs when remote attackers manipulate the specified parameters in the admin.php script to inject malicious JavaScript code or HTML content. When these parameters are processed and rendered in the administrative interface without proper sanitization, the injected code executes within the context of authenticated users' browsers. This creates a persistent threat vector where attackers can potentially escalate privileges, steal session cookies, or perform unauthorized administrative actions. The vulnerability affects the core administrative functionality of the CMS, making it particularly dangerous as it targets the most privileged user interface components.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with potential access to sensitive administrative functions and data within the SkyBlueCanvas system. The attack surface includes all parameters that can be manipulated through the URL, allowing for various attack scenarios including session hijacking, data exfiltration, and privilege escalation. The fact that multiple parameters are affected increases the attack surface and makes exploitation more likely, as attackers can leverage any of these vectors to achieve their objectives. This vulnerability essentially undermines the security model of the CMS by allowing unauthenticated attackers to gain access to administrative capabilities through the injection of malicious code.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms. The primary defense involves sanitizing all user-supplied input parameters before they are processed or rendered in the application interface. This includes implementing proper HTML entity encoding for all dynamic content, employing Content Security Policy (CSP) headers to restrict script execution, and ensuring that all administrative interfaces properly validate and sanitize input. Organizations should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit these parameters. The vulnerability demonstrates the critical importance of secure coding practices and proper input validation, particularly within administrative interfaces where the potential for damage is greatest. This flaw aligns with ATT&CK technique T1059 which covers command and scripting interpreter usage, as attackers can leverage the XSS vulnerability to execute malicious scripts within the browser context of authenticated users. The vulnerability serves as a prime example of why regular security assessments and code reviews are essential for maintaining robust application security postures.