CVE-2020-35985 in Rukovoditel
Summary
by MITRE • 07/10/2021
A stored cross site scripting (XSS) vulnerability in the 'Global Lists" feature of Rukovoditel 2.7.2 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the 'Name' parameter.
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Analysis
by VulDB Data Team • 07/15/2021
The vulnerability identified as CVE-2020-35985 represents a critical stored cross site scripting flaw within the Rukovoditel 2.7.2 web application platform. This vulnerability specifically affects the Global Lists feature, which serves as a centralized repository for managing various list items and their associated metadata. The flaw exists in the application's input validation mechanisms, where user-supplied data entered into the Name parameter is not properly sanitized before being stored and subsequently rendered back to users. This creates a persistent vector for malicious code injection that can affect all authenticated users who interact with the compromised list items.
The technical implementation of this vulnerability stems from inadequate output encoding and input sanitization practices within the application's backend processing logic. When an authenticated attacker submits a crafted payload containing malicious javascript code or html elements into the Name field of a Global List item, the application stores this data without sufficient validation or encoding. Subsequently, when other users view the list or access the affected items, the stored malicious content executes within their browser context, potentially leading to session hijacking, credential theft, or further exploitation. This vulnerability operates under the CWE-79 category of Cross-Site Scripting, specifically classified as a stored XSS variant where the malicious payload persists in the application's database.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with a persistent foothold within the application environment. Since the vulnerability requires authentication to exploit, it represents a privilege escalation risk for users with valid credentials, potentially allowing attackers to access sensitive organizational data or manipulate workflow processes. The stored nature of this vulnerability means that the malicious payload remains active until manually removed by administrators, creating an ongoing threat vector that can affect multiple users over extended periods. This vulnerability aligns with ATT&CK technique T1531 for Establishing Persistence and T1059.007 for Command and Scripting Interpreter, as it enables attackers to execute arbitrary code within user browsers and maintain long-term access to the application environment.
Mitigation strategies for CVE-2020-35985 should prioritize immediate patching of the Rukovoditel application to the latest version that addresses this vulnerability. Organizations should implement comprehensive input validation and output encoding mechanisms to sanitize all user-supplied data before storage and rendering. The implementation of Content Security Policy headers can provide additional protection against script execution, while regular security auditing of user input fields should be conducted to identify potential injection points. Network monitoring solutions should be configured to detect unusual data submission patterns that might indicate exploitation attempts. Additionally, administrators should consider implementing role-based access controls and regular security training for users to minimize the impact of potential exploitation. The vulnerability demonstrates the critical importance of proper input validation in web applications and highlights the necessity of following secure coding practices to prevent persistent security flaws that can affect multiple users over time.