CVE-2007-2887 in WIYS
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in Web Icerik Yonetim Sistemi (WIYS) 1.0 allows remote attackers to inject arbitrary web script or HTML via the No parameter in the Sayfa page.
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Analysis
by VulDB Data Team • 01/05/2019
The vulnerability identified as CVE-2007-2887 represents a classic cross-site scripting flaw within the Web Icerik Yonetim Sistemi (WIYS) version 1.0 content management platform. This security weakness resides in the index.php script and specifically affects the Sayfa page functionality where user input is not properly sanitized before being rendered back to web browsers. The vulnerability manifests when the No parameter is manipulated by remote attackers, enabling them to inject malicious web scripts or HTML code that executes in the context of other users' browsers who view the affected page.
This XSS vulnerability falls under CWE-79 which categorizes improper neutralization of input during web page generation as a critical weakness in web application security. The flaw demonstrates a fundamental failure in input validation and output encoding practices that are essential for preventing malicious code injection attacks. The vulnerability operates by bypassing proper security controls that should validate and sanitize all user-supplied data before it is processed and displayed within the web application interface. Attackers can exploit this weakness to execute arbitrary scripts in victims' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious websites.
The operational impact of this vulnerability extends beyond simple script injection as it creates a persistent threat vector that can be leveraged for more sophisticated attacks within the target environment. When an authenticated user visits a page containing the malicious payload, their browser executes the injected code as if it were legitimate content from the web application. This behavior violates the principle of least privilege and can enable attackers to access sensitive data, modify content, or perform actions on behalf of legitimate users. The vulnerability affects the entire user base of the WIYS system, making it particularly dangerous for applications that handle sensitive information or provide administrative functionality.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The most effective immediate solution involves sanitizing all user inputs, particularly the No parameter in this case, by removing or encoding potentially dangerous characters such as angle brackets, script tags, and other HTML constructs. The implementation of Content Security Policy headers can provide additional defense-in-depth measures to prevent execution of unauthorized scripts. Organizations should also consider implementing proper web application firewall rules to detect and block suspicious input patterns. According to ATT&CK framework, this vulnerability maps to T1566.001 which covers the technique of "Phishing with Spoofed Delivery", as attackers can use this XSS flaw to create convincing phishing pages that appear legitimate to users. Regular security audits and code reviews should be conducted to identify similar input validation weaknesses in other parts of the application, as this vulnerability demonstrates poor security practices that may exist elsewhere within the system. The remediation process should include thorough testing of all user input handling mechanisms to ensure that no other parameters or functions contain similar flaws that could be exploited by malicious actors.