CVE-2015-9105 in Video Station
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Synology Video Station 1.2 before 1.2-0455, 1.5 before 1.5-0772, and 1.6 before 1.6-0847 allow remote authenticated attackers to inject arbitrary web script or HTML via the (1) file name or (2) collection name of videos.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/21/2019
The vulnerability identified as CVE-2015-9105 represents a critical cross-site scripting flaw affecting Synology Video Station versions prior to specific patch releases. This vulnerability resides within the web application interface of the video management system, which is commonly deployed in enterprise and home network environments for media streaming and organization. The affected versions include 1.2 before 1.2-0455, 1.5 before 1.5-0772, and 1.6 before 1.6-0847, indicating a widespread impact across multiple release branches of the software. The vulnerability is particularly concerning as it affects authenticated users, meaning that an attacker must first establish valid credentials to exploit the flaw, but once compromised, the impact can be severe given the nature of the web application.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the video management interface. Attackers can exploit this weakness by manipulating the file name or collection name fields when adding or editing video content. The flaw occurs because the application fails to properly sanitize user-supplied input before rendering it in web pages, allowing malicious scripts to be executed in the context of other users' browsers. This represents a classic XSS vulnerability pattern where user-controllable data flows directly into HTML output without proper sanitization or encoding. The vulnerability is categorized under CWE-79 as Improper Neutralization of Input During Web Page Generation, which is a fundamental web application security weakness that enables attackers to inject malicious code into web pages viewed by other users.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the capability to perform session hijacking, steal sensitive information, and potentially escalate privileges within the affected environment. When authenticated users browse to pages containing maliciously crafted video names or collection titles, their browsers execute the injected scripts, which can then access session cookies, steal authentication tokens, or redirect users to malicious sites. The vulnerability is particularly dangerous in enterprise environments where Synology Video Station might be used for business-critical video content management, as it could enable attackers to access confidential media files or disrupt business operations. The attack vector requires authentication, which limits the scope to users who already have valid accounts, but this does not diminish the severity given that many organizations maintain video station access for multiple users including administrators.
Mitigation strategies for CVE-2015-9105 primarily involve immediate patching of affected Synology Video Station installations to the latest versions that contain the necessary security fixes. Organizations should also implement input validation measures at the network level and consider web application firewalls to detect and block suspicious payloads. The remediation process should include comprehensive testing to ensure that the patch does not introduce compatibility issues with existing video management workflows. Additionally, security awareness training for administrators can help prevent unauthorized access to video station interfaces, while regular vulnerability assessments should be conducted to identify similar weaknesses in other networked applications. This vulnerability aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1071.001 for application layer protocol usage, demonstrating how web-based vulnerabilities can serve as entry points for broader attack campaigns within networked environments.