CVE-2018-15530 in ColorQube 8580
Summary
by MITRE
Cross-site scripting (XSS) in the web interface of the Xerox ColorQube 8580 allows remote persistent injection of custom HTML / JavaScript code.
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Analysis
by VulDB Data Team • 06/09/2020
The vulnerability CVE-2018-15530 represents a critical cross-site scripting flaw discovered in the web interface of Xerox ColorQube 8580 multifunction devices. This security weakness resides within the device's web-based management interface, which serves as the primary means for administrators to configure and monitor the printer's operations. The vulnerability specifically affects the device's handling of user-supplied input data within the web interface, creating an opportunity for malicious actors to inject persistent HTML and JavaScript code that can be executed by other users who access the compromised interface. The flaw demonstrates a classic persistent XSS vulnerability where the injected code is stored on the server and subsequently served to other users without proper sanitization or validation of input parameters. This type of vulnerability falls under CWE-79 which defines the weakness of Cross-site Scripting and aligns with the ATT&CK technique T1059.007 for Command and Scripting Interpreter, specifically targeting web-based command execution through browser-based interfaces.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the ColorQube 8580's web interface components. When administrators or users enter data into form fields or configuration parameters through the web interface, the system fails to properly sanitize or encode the input before rendering it in subsequent web pages. This allows attackers to submit malicious payloads that contain HTML tags and JavaScript code which are then stored in the device's configuration or user data stores. The persistence aspect of this vulnerability means that once the malicious code is injected, it will continue to execute whenever the affected web interface is accessed by any user, making it particularly dangerous for enterprise environments where multiple administrators may interact with the device. The vulnerability impacts the device's authentication and authorization mechanisms by potentially allowing attackers to escalate privileges or gain unauthorized access to sensitive configuration data.
The operational impact of CVE-2018-15530 extends beyond simple code injection, as it creates a potential vector for more sophisticated attacks within network environments. An attacker who successfully exploits this vulnerability can execute arbitrary JavaScript code in the context of other users' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The persistent nature of the vulnerability means that even after the initial injection, the malicious code remains active and can be leveraged for ongoing surveillance or attack activities. This vulnerability particularly affects enterprise security postures as it allows attackers to compromise the device's web interface and potentially use it as a foothold for further network exploration. Organizations using Xerox ColorQube 8580 devices face significant risk of data exposure and unauthorized access, as the vulnerability can be exploited without requiring physical access to the device, making it particularly concerning for environments with limited network segmentation. The vulnerability also impacts the device's integrity and availability by potentially allowing attackers to modify device configurations or disrupt normal operations through malicious code execution.
Mitigation strategies for CVE-2018-15530 should focus on immediate remediation through official firmware updates provided by Xerox, which would address the underlying input validation and output encoding flaws. Network segmentation should be implemented to isolate the affected devices from critical network segments, reducing the potential attack surface and limiting lateral movement if exploitation occurs. Input validation controls must be strengthened at the application level, ensuring all user-supplied data is properly sanitized and encoded before being processed or displayed within the web interface. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other networked devices within the organization. Access controls should be reviewed and strengthened to limit administrative access to the device's web interface, implementing principle of least privilege and multi-factor authentication where possible. Organizations should also implement web application firewalls and content security policies to detect and block malicious payloads attempting to exploit XSS vulnerabilities. The vulnerability highlights the importance of maintaining up-to-date security patches and conducting regular vulnerability assessments of networked devices to prevent exploitation of known security flaws. Additionally, security awareness training for administrators should emphasize the importance of monitoring device interfaces for suspicious activity and understanding the risks associated with persistent code injection vulnerabilities in networked printing devices.