CVE-2008-1347 in EasyCalendar
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in staticpages/easygallery/index.php in MyioSoft EasyGallery 5.0tr and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the PATH_INFO or (2) the q parameter in an about action to the help system.
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Analysis
by VulDB Data Team • 10/19/2024
The vulnerability identified as CVE-2008-1347 represents a critical cross-site scripting flaw within MyioSoft EasyGallery version 5.0tr and earlier installations. This security weakness resides in the staticpages/easygallery/index.php script and manifests through two distinct attack vectors that enable remote threat actors to execute malicious web scripts or HTML content within the context of affected user sessions. The vulnerability specifically targets the application's handling of user-supplied input through PATH_INFO parameters and the q parameter during help system operations, creating opportunities for persistent malicious code injection.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization within the EasyGallery application framework. When the application processes PATH_INFO data or the q parameter in the help system's about action, it fails to properly escape or filter user-provided content before rendering it in web responses. This inadequate sanitization allows attackers to inject malicious scripts that execute in the browsers of unsuspecting users who view the affected pages. The vulnerability operates at the application layer and directly impacts the web application's security posture by enabling unauthorized code execution within user contexts.
The operational impact of CVE-2008-1347 extends beyond simple script injection, potentially enabling attackers to perform session hijacking, steal sensitive user information, manipulate application data, or redirect users to malicious websites. The vulnerability's remote exploitability means attackers can leverage it without requiring local system access or authentication, making it particularly dangerous in web environments where multiple users interact with the application. The attack surface is broad as the vulnerability affects the core help system functionality and PATH_INFO processing, which are commonly used components in web applications. This flaw aligns with CWE-79, which categorizes cross-site scripting vulnerabilities as a fundamental weakness in input validation and output encoding.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding mechanisms throughout the application. The most effective remediation involves sanitizing all user-supplied input through proper escaping techniques before rendering any content in web responses. Security measures should include implementing Content Security Policy headers to limit script execution, utilizing parameterized queries for dynamic content generation, and ensuring proper input validation at multiple layers of the application architecture. Organizations should also consider implementing web application firewalls to detect and block malicious payloads targeting similar XSS vulnerabilities. The remediation efforts must address both PATH_INFO and q parameter handling specifically, as these represent the two identified attack vectors within the application's codebase. This vulnerability demonstrates the critical importance of proper input sanitization and output encoding practices in preventing client-side exploitation, aligning with ATT&CK technique T1566 for initial access through malicious web content and T1059 for command and control through script injection.