CVE-2018-0724 in Q'center Virtual Appliance
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Q'center Virtual Appliance 1.8.1014 and earlier versions could allow remote attackers to inject Javascript code in the compromised application, a different vulnerability than CVE-2018-0723.
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Analysis
by VulDB Data Team • 04/24/2020
The CVE-2018-0724 vulnerability represents a critical cross-site scripting flaw discovered in the Q'center Virtual Appliance version 1.8.1014 and earlier releases. This vulnerability falls under the broader category of web application security weaknesses that specifically target the integrity of user input validation mechanisms within web interfaces. The Q'center Virtual Appliance serves as a network monitoring and management solution that provides administrators with centralized visibility into network infrastructure, making this vulnerability particularly concerning for enterprise environments that rely on such monitoring platforms. The flaw manifests when the application fails to properly sanitize user-supplied input before rendering it within web pages, creating an avenue for malicious actors to execute arbitrary javascript code within the context of authenticated user sessions. This vulnerability is distinct from CVE-2018-0723, indicating that the affected system contains multiple independent XSS vectors that require separate remediation efforts.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding practices within the web application's user interface components. When users interact with the Q'center appliance through its web-based management interface, certain parameters or fields do not undergo proper sanitization before being processed and displayed to end users. This failure creates an environment where an attacker can craft malicious payloads containing javascript code that gets executed when other users view the affected web page content. The vulnerability specifically affects the appliance's handling of user-provided data in contexts where dynamic content generation occurs, particularly within administrative interfaces where users might input configuration parameters, device names, or other metadata. Attackers can exploit this weakness by injecting malicious scripts that can steal session cookies, redirect users to malicious sites, or perform unauthorized actions within the application's context, all while appearing to originate from legitimate user sessions.
The operational impact of CVE-2018-0724 extends beyond simple script injection, as it can enable attackers to establish persistent access to network monitoring systems that are critical for enterprise security operations. When an attacker successfully exploits this vulnerability, they can potentially access sensitive network information, manipulate monitoring data, or use the compromised appliance as a pivot point for further attacks within the network infrastructure. The vulnerability's remote exploitation capability means that attackers do not need physical access to the appliance or network segment to launch attacks, making it particularly dangerous in environments where the appliance is accessible from external networks. Organizations relying on Q'center for network visibility and security monitoring face significant risks, as the compromised appliance could provide attackers with insights into network traffic patterns, device configurations, and security event data that would otherwise remain protected. The attack surface is further expanded when considering that network monitoring appliances often contain credentials and access controls that could be leveraged for privilege escalation or lateral movement attacks.
Mitigation strategies for CVE-2018-0724 should prioritize immediate remediation through official vendor patches and updates, as the vulnerability affects a specific version range that has likely been addressed in subsequent releases. Organizations should implement comprehensive input validation measures across all user-facing web interfaces, ensuring that all user-supplied data undergoes proper sanitization before being rendered in web pages. The implementation of Content Security Policy headers can provide an additional layer of protection against script execution, while proper output encoding techniques should be applied to all dynamic content generation processes. Network segmentation and access controls should be reviewed to limit exposure of the vulnerable appliance to untrusted networks, and regular security assessments should be conducted to identify similar vulnerabilities in other network monitoring and management tools. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a clear violation of the principle of least privilege in web application security. From an ATT&CK framework perspective, this vulnerability maps to techniques involving command and control communications, credential access, and privilege escalation through compromised network infrastructure, making it a critical target for both defensive and offensive security operations.