CVE-2017-15888 in Audio Station
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Custom Internet Radio List in Synology Audio Station before 6.3.0-3260 allows remote authenticated attackers to inject arbitrary web script or HTML via the NAME parameter.
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Analysis
by VulDB Data Team • 01/05/2023
The CVE-2017-15888 vulnerability represents a critical cross-site scripting flaw discovered in Synology Audio Station's Custom Internet Radio List functionality prior to version 6.3.0-3260. This vulnerability falls under the CWE-79 category, which specifically addresses cross-site scripting attacks where malicious scripts are injected into web applications. The flaw exists within the parameter handling mechanism of the audio station's web interface, specifically targeting the NAME parameter that users can manipulate when creating custom radio station entries. Attackers with valid authentication credentials can exploit this weakness to inject malicious web scripts or HTML code that will execute in the context of other users' browsers who view the affected radio list entries.
The technical exploitation of this vulnerability occurs through the improper sanitization of user input within the NAME parameter field. When an authenticated attacker submits a crafted payload through this parameter, the application fails to adequately validate or escape the input before rendering it in the web interface. This allows the malicious code to be stored within the application's database and subsequently executed whenever other users access the affected radio station list. The vulnerability specifically affects the web-based administration interface of Synology Audio Station, making it particularly dangerous as it can be exploited by users with legitimate access credentials who may have been compromised or are acting maliciously. The attack vector requires authentication, which means the vulnerability cannot be exploited by anonymous users, but it represents a significant privilege escalation risk for compromised accounts.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with the ability to perform various malicious activities including session hijacking, data theft, and redirection to malicious websites. The attack can be particularly damaging in enterprise environments where Synology Audio Station is used for organizational media management, as it could allow attackers to access sensitive audio content, manipulate radio station configurations, or even exfiltrate user data. The vulnerability also aligns with ATT&CK technique T1566, which covers social engineering through malicious content delivery, as attackers could craft convincing payloads that appear legitimate within the audio station interface. Additionally, the exploitation could lead to persistent malicious presence within the system, as the injected scripts would continue to execute for any user who views the affected radio list entries.
Organizations should implement immediate mitigations including updating to Synology Audio Station version 6.3.0-3260 or later, which contains the necessary input validation and sanitization fixes. Network segmentation and access controls should be reinforced to limit the potential impact of compromised accounts, while regular security audits should be conducted to identify similar vulnerabilities in other applications. The vulnerability demonstrates the critical importance of input validation in web applications and serves as a reminder of the need for comprehensive security testing including dynamic application security testing and static code analysis to identify similar XSS vulnerabilities in other software components.