CVE-2024-29877 in Sentrifugo
Summary
by MITRE • 03/21/2024
Cross-Site Scripting (XSS) vulnerability in Sentrifugo 3.2, through /sentrifugo/index.php/expenses/expensecategories/edit, 'expense_category_name' parameter. The exploitation of this vulnerability could allow a remote user to send a specially crafted URL to the victim and steal their session data.
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Analysis
by VulDB Data Team • 04/13/2025
This cross-site scripting vulnerability exists in Sentrifugo version 3.2 within the expense categories editing functionality at the specific endpoint /sentrifugo/index.php/expenses/expensecategories/edit. The flaw specifically affects the 'expense_category_name' parameter which fails to properly sanitize user input before rendering it back to the browser. This represents a classic reflected cross-site scripting vulnerability where malicious input is immediately reflected back to the user without adequate output encoding or validation mechanisms.
The technical implementation of this vulnerability allows an attacker to inject malicious javascript code through the expense_category_name parameter. When a victim navigates to a specially crafted URL containing the malicious payload, the script executes in the victim's browser context with the privileges of the authenticated user. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications. The attack vector operates through a server-side parameter that is directly incorporated into the HTML response without proper sanitization, creating an opportunity for malicious code execution.
The operational impact of this vulnerability extends beyond simple script execution as it enables session hijacking and potential privilege escalation attacks. An attacker who successfully exploits this vulnerability can steal session cookies, impersonate legitimate users, and potentially gain access to sensitive financial data within the expense management system. The vulnerability affects any authenticated user who visits the maliciously crafted URL, making it particularly dangerous in environments where multiple users interact with the system. This aligns with ATT&CK technique T1531 which focuses on credential access through session management vulnerabilities.
Mitigation strategies should include immediate input validation and output encoding for all user-supplied parameters. The application should implement strict sanitization of the expense_category_name parameter to prevent script injection attempts. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against XSS attacks. The recommended fix involves proper HTML encoding of all dynamic content before rendering it back to the user interface. Organizations should also consider implementing web application firewalls and regular security scanning to detect similar vulnerabilities. The vulnerability demonstrates the critical importance of input validation and output encoding in preventing XSS attacks, as outlined in OWASP Top Ten security practices.