CVE-2019-7541 in Rukovoditel
Summary
by MITRE
Rukovoditel through 2.4.1 allows XSS via a URL that lacks a module=users%2flogin substring.
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Analysis
by VulDB Data Team • 09/09/2025
The vulnerability CVE-2019-7541 affects Rukovoditel version 2.4.1 and earlier, representing a cross-site scripting flaw that can be exploited through improperly validated URL parameters. This vulnerability resides within the application's input sanitization mechanisms, specifically failing to properly validate and sanitize URL strings that lack the expected module=users%2flogin substring. The flaw demonstrates a classic insufficient input validation issue that can be categorized under CWE-79, which addresses cross-site scripting vulnerabilities. The affected application fails to implement proper output encoding or validation of user-supplied input before processing or rendering it within the web interface, creating an avenue for malicious actors to inject arbitrary script code.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL that bypasses the expected module parameter validation. Without the required module=users%2flogin substring, the application's routing logic fails to properly sanitize the input, allowing malicious script code to be executed within the context of a victim's browser session. This type of vulnerability falls under the ATT&CK technique T1203, which encompasses exploitation of web application vulnerabilities to execute malicious code. The flaw essentially allows an attacker to inject JavaScript code that executes when a victim navigates to the malicious URL, potentially leading to session hijacking, credential theft, or other malicious activities. The vulnerability is particularly concerning because it can be exploited without requiring authentication or specific user interaction beyond visiting the malicious link.
The operational impact of CVE-2019-7541 extends beyond simple script execution, as it can lead to complete session compromise and unauthorized access to sensitive data within the Rukovoditel application. Attackers can leverage this vulnerability to steal user sessions, modify application behavior, or redirect users to malicious sites. The vulnerability affects the application's core authentication and session management functionality, potentially allowing attackers to escalate privileges or gain unauthorized access to user accounts. Organizations using Rukovoditel versions prior to 2.4.2 face significant risk exposure, as the vulnerability can be exploited remotely without requiring any special privileges or authentication credentials. The impact is further amplified by the fact that the vulnerability can be triggered through simple URL manipulation, making it accessible to attackers with minimal technical expertise. This type of vulnerability directly impacts the integrity and confidentiality of user data, as well as the overall security posture of systems relying on the vulnerable application.
The recommended mitigation strategy for CVE-2019-7541 involves upgrading to Rukovoditel version 2.4.2 or later, which includes proper input validation and sanitization mechanisms to prevent unauthorized script injection. Organizations should implement comprehensive input validation for all URL parameters, ensuring that the application properly validates and sanitizes all user-supplied input before processing. Additionally, implementing proper output encoding and Content Security Policy (CSP) headers can provide additional protection against XSS attacks. The fix should include robust parameter validation that ensures all URLs contain the expected module parameters and that any unexpected input is properly escaped or rejected. Security teams should also conduct regular vulnerability assessments and penetration testing to identify similar input validation flaws within the application ecosystem. The vulnerability demonstrates the critical importance of proper input validation and output encoding practices, aligning with security best practices outlined in OWASP Top 10 and other industry standards for web application security.