CVE-2020-24992 in CmsWing
Summary
by MITRE • 05/18/2021
There is a cross site scripting vulnerability on CmsWing 1.3.7. This vulnerability (stored XSS) is triggered when an administrator accesses the content management module.
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Analysis
by VulDB Data Team • 05/22/2021
The vulnerability identified as CVE-2020-24992 represents a stored cross site scripting flaw within the CmsWing content management system version 1.3.7. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79 which specifically addresses improper neutralization of input during web page generation. The flaw manifests when an administrator navigates to the content management module, indicating that the malicious payload is stored within the application's database or storage mechanisms rather than being reflected in a single request. The stored nature of this vulnerability means that the malicious script persists and executes automatically whenever the affected page is accessed by an administrator, creating a persistent threat vector that can compromise administrative sessions and potentially lead to full system takeover. The vulnerability specifically impacts the content management module, suggesting that user-generated content or administrative inputs processed within this component are not properly sanitized or validated before being rendered back to users. This presents a significant security risk as administrators are typically high-privilege users whose sessions, if compromised, could allow attackers to manipulate content, modify system configurations, or exfiltrate sensitive data. The attack vector requires an administrator to access the content management interface, which means that successful exploitation depends on the attacker gaining the ability to inject malicious scripts into the system through legitimate user input mechanisms. According to the MITRE ATT&CK framework, this vulnerability maps to technique T1059.001 for command and scripting interpreter, as attackers can leverage the stored XSS to execute malicious scripts within the administrator's browser context, potentially leading to privilege escalation and lateral movement within the compromised environment. The vulnerability's impact extends beyond simple script execution, as it can facilitate session hijacking, data theft, and unauthorized modifications to the CMS content. Organizations using CmsWing 1.3.7 should immediately implement input validation and output encoding measures to prevent malicious payloads from being stored and executed. The recommended mitigations include implementing strict input sanitization routines, employing Content Security Policy headers, and ensuring that all user inputs are properly escaped before being stored or displayed. Regular security audits and vulnerability assessments should be conducted to identify similar stored XSS vulnerabilities in other components of the system. Additionally, implementing proper access controls and privilege separation can limit the damage that could occur if such vulnerabilities are exploited, as administrative accounts should have the highest level of security protection and monitoring. The vulnerability underscores the critical importance of proper input validation in web applications and demonstrates how seemingly minor flaws in data handling can lead to significant security breaches.