CVE-2006-2957 in i.List
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in i.List 1.5 beta and earlier allows remote attackers to inject arbitrary web script or HTML via the banurl parameter to add.php. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 07/28/2018
This cross-site scripting vulnerability exists in i.List 1.5 beta and earlier versions of the web application, specifically within the add.php script where the banurl parameter is processed without adequate input validation or sanitization. The flaw represents a classic client-side injection vulnerability that allows remote attackers to execute malicious scripts in the context of other users' browsers. The vulnerability stems from the application's failure to properly filter or escape user-supplied input before incorporating it into dynamic web content, creating an opening for malicious actors to inject arbitrary HTML or JavaScript code.
The technical implementation of this vulnerability occurs when the application accepts the banurl parameter through the add.php endpoint and directly incorporates it into the web page response without proper sanitization measures. This allows an attacker to craft malicious URLs containing script payloads that get executed when legitimate users view the affected page. The vulnerability is classified as a reflected XSS attack since the malicious script is reflected back to the user through the application's response. According to CWE classification, this represents a CWE-79: Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that enables attackers to inject malicious code into web pages viewed by other users.
The operational impact of this vulnerability is significant as it enables attackers to perform various malicious activities including session hijacking, credential theft, defacement of web content, and redirection to malicious sites. An attacker could exploit this vulnerability to steal user sessions, inject phishing content, or redirect victims to sites hosting malware. The attack vector is particularly dangerous because it requires minimal user interaction beyond visiting a page containing the malicious link. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter: JavaScript, and T1566 for Phishing, as it enables the delivery of malicious JavaScript payloads through web-based attack vectors.
Mitigation strategies should focus on implementing robust input validation and output encoding mechanisms throughout the application. The most effective approach involves sanitizing all user-supplied input, particularly parameters like banurl, through proper HTML entity encoding before rendering them in web responses. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against script execution. The application should also employ proper parameter validation to reject or sanitize any input containing potentially dangerous characters or script tags. Organizations should also consider implementing web application firewalls and regular security code reviews to identify and remediate similar vulnerabilities. The vulnerability highlights the critical importance of input validation and output encoding practices as outlined in OWASP Top Ten security principles, particularly the prevention of XSS vulnerabilities through proper data sanitization and security coding standards.