CVE-2007-0590 in Forum Livre
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in busca2.asp in Forum Livre 1.0 remote attackers to inject arbitrary web script or HTML via the palavra parameter.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/19/2024
The vulnerability identified as CVE-2007-0590 represents a classic cross-site scripting flaw within the Forum Livre 1.0 web application, specifically affecting the busca2.asp component. This issue arises from inadequate input validation and sanitization mechanisms that fail to properly filter user-supplied data before incorporating it into dynamic web content. The vulnerability is classified under CWE-79 as Improper Neutralization of Input During Web Page Generation, which directly enables malicious actors to execute arbitrary scripts within the context of the victim's browser session. The affected parameter 'palavra' serves as the primary injection vector, allowing remote attackers to manipulate the application's search functionality and potentially compromise user sessions or steal sensitive information.
The technical exploitation of this vulnerability occurs when an attacker submits malicious input through the palavra parameter in the busca2.asp script. The application fails to sanitize or escape the user input before rendering it in the web page response, creating an environment where attacker-controlled scripts can be executed in the victim's browser context. This type of XSS vulnerability falls into the category of stored or reflected XSS depending on how the application processes and stores the input data, though the description suggests a reflected variant where the malicious payload is immediately reflected back to the user. The vulnerability enables attackers to perform various malicious activities including session hijacking, credential theft, defacement of web content, and redirection to malicious sites. The impact is particularly concerning in a forum environment where users may trust the application's content and interact with potentially malicious payloads.
The operational implications of this vulnerability extend beyond simple script execution, as it fundamentally undermines the security posture of the Forum Livre 1.0 platform. Users who browse the forum may unknowingly execute malicious scripts that can capture their session cookies, redirect them to phishing sites, or inject malicious content that appears legitimate. The vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious links and T1059.001 for command and scripting interpreter execution. Organizations using this forum software face significant risks including data breaches, reputational damage, and potential regulatory compliance violations. The vulnerability's exploitation is relatively straightforward, requiring only basic web application testing skills and making it particularly dangerous in environments where users may not be security-aware.
Mitigation strategies for CVE-2007-0590 must focus on implementing robust input validation and output encoding mechanisms. The primary defense involves sanitizing all user inputs through proper escaping techniques before incorporating them into web page content, utilizing frameworks that automatically handle XSS protection. Organizations should implement Content Security Policy headers to limit script execution sources and employ web application firewalls to detect and block malicious payloads. The solution should include comprehensive input validation that rejects or sanitizes potentially harmful characters and patterns commonly associated with XSS attacks. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the application. The fix requires modifying the busca2.asp script to properly encode the palavra parameter output and implement proper input validation to prevent malicious payloads from being executed within the user's browser context.