CVE-2019-7420 in X7400GX Syncthru
Summary
by MITRE
XSS exists in SAMSUNG X7400GX SyncThru Web Service V6.A6.25 V11.01.05.25_08-21-2015 in "/sws.application/information/networkinformationView.sws" in the tabName parameter.
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Analysis
by VulDB Data Team • 08/04/2023
The vulnerability identified as CVE-2019-7420 represents a cross-site scripting flaw within the SAMSUNG X7400GX SyncThru Web Service version 6.A6.25 V11.01.05.25_08-21-2015. This web service interface provides network management capabilities for Samsung printers and multifunction devices, making it a critical component in enterprise environments where print security is paramount. The vulnerability specifically manifests in the network information viewing functionality, which is accessed through the "/sws.application/information/networkinformationView.sws" endpoint. The flaw occurs when the tabName parameter is processed without adequate input validation or output encoding, creating an avenue for malicious actors to inject arbitrary JavaScript code into the web interface.
This XSS vulnerability falls under CWE-79, which categorizes cross-site scripting as a code injection weakness where untrusted data is improperly incorporated into web page content. The attack vector is particularly concerning as it targets the network information viewing component, which could potentially be accessed by users with varying privilege levels depending on the device configuration. The vulnerability enables attackers to execute malicious scripts in the context of the victim's browser, potentially leading to session hijacking, credential theft, or unauthorized actions within the printer management interface. The specific parameter tabName serves as the injection point, suggesting that the application fails to properly sanitize user-supplied input before rendering it within the web page context.
The operational impact of this vulnerability extends beyond simple script execution, as it could allow attackers to manipulate the printer's network configuration, access sensitive administrative functions, or establish persistent access points within the network. In enterprise environments where these devices are connected to internal networks, the vulnerability could serve as a stepping stone for lateral movement attacks, aligning with ATT&CK technique T1071.004 for application layer protocol manipulation. The vulnerability's presence in a printer management service means that successful exploitation could compromise not only the individual device but also potentially affect broader network security posture, as these devices often serve as network endpoints that may not receive regular security updates or patches.
Organizations should implement immediate mitigations including input validation for all parameters in the affected web service endpoints, output encoding of user-supplied data, and network segmentation to limit access to these management interfaces. The vulnerability highlights the critical importance of securing Internet-facing printer management services and implementing proper web application firewalls to detect and prevent XSS attacks. Additionally, regular security assessments of networked devices and mandatory patch management policies should be enforced to prevent exploitation of similar vulnerabilities in other printer models and firmware versions. The incident underscores the necessity of treating peripheral network devices with the same security rigor applied to traditional network infrastructure components.