CVE-2018-18952 in JEECMS
Summary
by MITRE
JEECMS 9.3 has XSS via an index.do#/content/update?type=update URI.
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Analysis
by VulDB Data Team • 04/10/2020
The vulnerability CVE-2018-18952 affects JEECMS version 9.3 and represents a cross-site scripting flaw that manifests through a specific URI pattern involving the index.do#/content/update?type=update endpoint. This issue falls under the category of insecure direct object reference vulnerabilities as identified by CWE-639, where the application fails to properly validate user input parameters before incorporating them into dynamic web content. The flaw exists within the content management system's handling of URL fragments and query parameters, creating an avenue for malicious actors to inject malicious scripts into web pages viewed by other users.
The technical implementation of this vulnerability stems from inadequate sanitization of input values within the content update functionality of JEECMS. When users navigate to the specified URI pattern, the application processes the type parameter without sufficient validation or encoding, allowing attackers to inject malicious JavaScript code through the URL fragment. This type of vulnerability is classified as CWE-79, which specifically addresses cross-site scripting in web applications, and represents a critical security weakness that enables attackers to execute arbitrary scripts in the context of the victim's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to session hijacking, credential theft, and potential full system compromise. Attackers can leverage this XSS flaw to steal user sessions, redirect victims to malicious websites, or inject malware payloads that persist in the victim's browser environment. The vulnerability is particularly concerning in content management systems where users may have elevated privileges, as it could enable attackers to modify content, access restricted areas, or escalate their privileges within the system. This aligns with ATT&CK technique T1059.007 for command and scripting interpreter, where attackers can execute malicious scripts through web interfaces.
Mitigation strategies for CVE-2018-18952 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application's codebase. Organizations should ensure that all user-supplied parameters, particularly those used in URL fragments and query strings, undergo strict sanitization before being rendered in web pages. The implementation of Content Security Policy headers can provide additional protection against script injection attacks, while regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging. Updates to JEECMS version 9.3.1 or later are strongly recommended to address this vulnerability, as the vendor has likely implemented proper parameter validation and encoding mechanisms to prevent malicious script injection through the affected URI patterns.