CVE-2006-1720 in SaphpLesson
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in search.php in SaphpLesson 3.0 allows remote attackers to inject arbitrary web script or HTML via the Word parameter. NOTE: it is possible that this issue is resultant from SQL injection.
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Analysis
by VulDB Data Team • 07/24/2018
The vulnerability described in CVE-2006-1720 represents a critical cross-site scripting flaw within the SaphpLesson 3.0 web application, specifically affecting the search.php component. This issue exposes the application to remote code execution risks where malicious actors can inject arbitrary web scripts or HTML content through the Word parameter. The vulnerability stems from inadequate input validation and output sanitization mechanisms, allowing attackers to bypass security controls and execute malicious code within the context of other users' browsers. The flaw demonstrates a classic XSS vulnerability pattern that can be exploited to steal session cookies, redirect users to malicious sites, or perform unauthorized actions on behalf of victims. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications, making it a fundamental security weakness that undermines user trust and application integrity.
The technical implementation of this vulnerability occurs when the search.php script fails to properly sanitize user input received through the Word parameter. When users submit search queries containing malicious payloads, the application processes these inputs without adequate filtering or encoding, subsequently rendering the tainted data back to users in the web response. The XSS vector allows attackers to inject script tags, JavaScript code, or HTML elements that execute in the victim's browser context. The vulnerability's classification as potentially stemming from SQL injection suggests that the application may have insufficient data validation across multiple attack surfaces, indicating a broader architectural weakness in input handling and data processing. This dual nature of the vulnerability means that exploitation could potentially lead to both client-side script execution and database manipulation, amplifying the overall security risk.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable sophisticated attack scenarios that compromise user sessions and application data. An attacker could craft malicious search queries that, when processed by the vulnerable application, would execute scripts in the context of authenticated users, potentially stealing sensitive information or performing unauthorized actions. The vulnerability affects the entire user base that interacts with the search functionality, making it particularly dangerous as it can be exploited by anyone with access to the application. This weakness creates a persistent threat vector that can be leveraged for phishing attacks, session hijacking, or data exfiltration. The vulnerability's presence in a lesson management system suggests potential exposure of educational content, user information, and institutional data, making it a significant concern for organizations relying on the application for learning management.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The primary fix involves implementing comprehensive input validation and output encoding mechanisms, ensuring that all user-supplied data is properly sanitized before processing or display. This includes applying proper HTML encoding to prevent script execution and implementing strict input validation rules that reject potentially malicious content. Organizations should implement Content Security Policy headers to add an additional layer of protection against XSS attacks. The vulnerability's potential relationship to SQL injection indicates that a comprehensive security audit is necessary to identify and address similar weaknesses throughout the application. Security measures should follow established frameworks such as the OWASP Top 10 guidelines, with particular attention to input validation and output encoding practices. Regular security testing including dynamic application security testing and manual penetration testing should be conducted to identify similar vulnerabilities and ensure that security controls remain effective against evolving attack techniques.