CVE-2018-8069 in QCMS
Summary
by MITRE
QCMS version 3.0 has XSS via the webname parameter to the /backend/system.html URI.
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Analysis
by VulDB Data Team • 01/12/2020
The vulnerability identified as CVE-2018-8069 represents a cross-site scripting flaw within the QCMS content management system version 3.0. This issue specifically manifests through the webname parameter when interacting with the /backend/system.html URI endpoint. The vulnerability classification aligns with CWE-79 which defines cross-site scripting as a weakness where untrusted data is sent to a web browser without proper validation or sanitization. This allows attackers to inject malicious scripts that execute in the context of other users' browsers, potentially compromising their sessions and data.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload containing script code and submits it through the webname parameter of the system.html endpoint. The application fails to properly sanitize or escape user input before rendering it within the web page context, creating an environment where client-side scripts can be executed. This flaw exists in the backend administrative interface, making it particularly concerning as it could potentially be leveraged by attackers to gain unauthorized access to system administrative functions or to steal administrative credentials.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking attacks, steal cookies, redirect users to malicious sites, or even perform actions on behalf of authenticated users. The backend nature of the targeted URI suggests that successful exploitation could lead to privilege escalation or complete system compromise if attackers can leverage the XSS to access administrative functions. According to ATT&CK framework technique T1059.007, this vulnerability represents a client-side code injection vector that could be used for post-exploitation activities within the victim environment.
Security practitioners should prioritize patching this vulnerability immediately as it affects the core administrative functionality of the QCMS platform. The fix should implement proper input validation and output encoding for all user-supplied parameters, particularly those used in administrative interfaces. Organizations should also implement web application firewalls to detect and block suspicious payloads targeting this specific URI endpoint. Additionally, regular security testing of web applications should include thorough parameter validation checks to prevent similar vulnerabilities from being introduced in future versions of the software. The vulnerability demonstrates the critical importance of input sanitization in web applications, particularly within administrative interfaces where the potential impact of exploitation can be severe.