CVE-2018-19956 in Photo Station
Summary
by MITRE
The cross-site scripting vulnerability has been reported to affect earlier versions of Photo Station. If exploited, the vulnerability could allow remote attackers to inject malicious code. This issue affects: QNAP Systems Inc. Photo Station versions prior to 5.7.11; versions prior to 6.0.10.
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Analysis
by VulDB Data Team • 12/01/2020
The cross-site scripting vulnerability identified as CVE-2018-19956 represents a critical security flaw in QNAP Systems Inc. Photo Station software that has significant implications for networked storage environments. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a common weakness in web applications that allows attackers to inject malicious scripts into web pages viewed by other users. The issue specifically impacts organizations using older versions of the Photo Station application, creating a persistent security risk that could be exploited by remote attackers without requiring authentication or privileged access to the system.
The technical flaw manifests in the improper validation and sanitization of user input within the Photo Station application's web interface. When users interact with the application's file upload or metadata handling features, the system fails to adequately filter or escape user-supplied data before rendering it in web responses. This allows malicious actors to craft specially crafted input that, when processed by the vulnerable application, gets executed in the context of other users' browsers. The vulnerability is particularly concerning because it affects both the 5.x and 6.x version lines of Photo Station, indicating a widespread issue that would impact numerous installations across different deployment scenarios.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it creates a persistent backdoor for attackers to establish ongoing access to compromised systems. Remote attackers could leverage this vulnerability to execute arbitrary code in the browsers of other users who view infected content, potentially leading to session hijacking, credential theft, or the installation of additional malware. The attack surface is particularly broad since Photo Station is designed for web-based file sharing and media management, meaning that legitimate users may unknowingly encounter malicious payloads when browsing shared folders or viewing uploaded content. This vulnerability directly maps to several tactics in the MITRE ATT&CK framework including initial access through web application attacks and privilege escalation via browser-based exploitation techniques.
Organizations affected by this vulnerability should immediately implement mitigation strategies including immediate patching to versions 5.7.11 or 6.0.10, which contain the necessary input validation fixes. Network segmentation and access controls should be strengthened to limit exposure of the Photo Station service to untrusted networks, while web application firewalls can provide additional protection layers. Security monitoring should be enhanced to detect suspicious user behavior patterns or unusual file upload activities that might indicate exploitation attempts. The vulnerability also highlights the importance of maintaining up-to-date software inventory and vulnerability management processes, as this issue demonstrates how outdated applications can create persistent security risks that remain exploitable for extended periods. Regular security assessments and penetration testing of web applications should be conducted to identify similar vulnerabilities that may exist in other enterprise systems.