CVE-2024-51706 in UW Freelancer Plugin
Summary
by MITRE • 11/09/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Upeksha Wisidagama UW Freelancer allows Reflected XSS.This issue affects UW Freelancer: from n/a through 0.1.
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Analysis
by VulDB Data Team • 02/28/2025
This vulnerability represents a classic reflected cross-site scripting flaw that undermines the security of the UW Freelancer web application. The issue stems from improper input validation and sanitization during web page generation processes, where user-supplied data is directly incorporated into dynamically generated HTML content without adequate neutralization. The vulnerability specifically affects versions of the UW Freelancer application ranging from the initial release through version 0.1, indicating it exists in the early stages of the software lifecycle and potentially impacts all installations within this version range.
The technical implementation of this flaw occurs when the application receives input through HTTP request parameters or headers and subsequently reflects this input back to the user's browser without proper encoding or sanitization. This creates an environment where malicious actors can inject arbitrary JavaScript code into web pages viewed by other users, exploiting the trust relationship between the browser and the vulnerable application. The reflected nature of this XSS vulnerability means that the malicious script is executed in the victim's browser as a result of the victim clicking on a specially crafted link or visiting a malicious web page that contains the exploit.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it provides attackers with the capability to perform a wide range of malicious activities including credential theft, data exfiltration, and potential privilege escalation within the application's context. Attackers can leverage this vulnerability to execute persistent attacks against users who interact with the application, potentially compromising user accounts and gaining unauthorized access to sensitive information. The vulnerability's presence in the initial versions of the application suggests inadequate security testing and input validation mechanisms during the development lifecycle, which is particularly concerning given the nature of web applications that handle user data and interactions.
Security mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. The most effective approach involves sanitizing all user inputs using context-appropriate encoding techniques such as HTML entity encoding for web page content, JavaScript encoding for script contexts, and URL encoding for URL parameters. Additionally, implementing a Content Security Policy (CSP) can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded and executed. The application should also employ proper HTTP headers including X-Content-Type-Options and X-Frame-Options to prevent MIME type sniffing and clickjacking attacks respectively. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and can be mapped to ATT&CK technique T1566.001 for initial access through spearphishing attachments or links, and T1071.001 for application layer protocol usage. Organizations should also conduct regular security assessments and implement proper security training for developers to prevent similar issues in future releases, as this represents a fundamental security weakness that can be addressed through proper secure coding practices and comprehensive testing procedures.
The vulnerability's classification as reflected XSS places it within the category of attacks where malicious scripts are reflected off a web server back to the user's browser, making it particularly dangerous in web applications that process user input. This type of vulnerability commonly occurs in applications that use user-provided parameters directly in their response generation without proper sanitization, creating a direct pathway for attackers to inject malicious code. The impact is amplified when the vulnerable application handles sensitive user data or provides administrative functions, as the XSS attack can potentially be used to escalate privileges or gain deeper access to the application's functionality. Security professionals should consider implementing automated security scanning tools that can detect such vulnerabilities during the development lifecycle, and establish secure coding standards that specifically address input validation and output encoding requirements to prevent similar issues from recurring in future versions of the software.