CVE-2008-7121 in Hot Links SQL-PHP
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Mr. CGI Guy Hot Links SQL-PHP 3 and earlier allows remote attackers to inject arbitrary web script or HTML via the search bar.
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Analysis
by VulDB Data Team • 12/18/2017
The CVE-2008-7121 vulnerability represents a classic cross-site scripting flaw in the Mr. CGI Guy Hot Links SQL-PHP application version 3 and earlier. This vulnerability exists within the web application's input validation mechanisms, specifically in how the search functionality processes user-provided data. The flaw allows malicious actors to inject arbitrary HTML or JavaScript code through the search bar interface, creating a persistent security risk for all users interacting with the vulnerable system.
This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent web application security weaknesses identified by the CWE organization. The attack vector exploits the application's failure to properly sanitize or encode user input before rendering it back to the browser. When a user submits a search query containing malicious script code, the application processes this input without adequate validation, allowing the injected payload to execute in the context of other users' browsers. The vulnerability specifically targets the search bar functionality, which serves as a primary interaction point for users and represents a high-value target for attackers seeking to compromise the application's security posture.
The operational impact of this vulnerability extends beyond simple data theft or defacement. Attackers can leverage this XSS flaw to hijack user sessions, redirect victims to malicious websites, or perform actions on behalf of authenticated users. The persistent nature of this vulnerability means that once exploited, malicious scripts can affect all subsequent users who view pages containing the injected content. This creates a cascading security risk where a single compromised search query can lead to widespread exploitation across the user base. The vulnerability's remote exploitability eliminates the need for local access or privileged accounts, making it particularly dangerous in multi-user environments where users may have varying levels of access rights.
Mitigation strategies for CVE-2008-7121 should focus on implementing robust input validation and output encoding mechanisms. The most effective approach involves sanitizing all user-provided input through proper encoding before processing or displaying it within the application. Implementing Content Security Policy headers can provide additional defense-in-depth measures by restricting the sources from which scripts can be loaded. Regular security updates and patches should be applied immediately upon availability, as this vulnerability affects older versions of the application. Organizations should also consider implementing web application firewalls to detect and block malicious input patterns targeting XSS vulnerabilities. The remediation process must include thorough testing to ensure that all input fields, including search functionality, properly handle potentially malicious data without compromising application functionality. This vulnerability demonstrates the critical importance of input validation and output encoding practices in web application security, aligning with the ATT&CK framework's reconnaissance and execution phases where adversaries exploit such weaknesses to establish persistent access to target systems.