CVE-2018-19951 in Music Station
Summary
by MITRE • 11/02/2020
If exploited, this cross-site scripting vulnerability could allow remote attackers to inject malicious code. This issue affects: QNAP Systems Inc. Music Station versions prior to 5.1.13; versions prior to 5.2.9; versions prior to 5.3.11.
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Analysis
by VulDB Data Team • 12/01/2020
This cross-site scripting vulnerability in QNAP Systems Inc. Music Station represents a critical security flaw that enables remote attackers to execute malicious code through web-based interfaces. The vulnerability exists within the application's handling of user input and output sanitization mechanisms, creating an opening for attackers to inject malicious scripts into web pages viewed by other users. The affected versions span multiple release lines including 5.1.12 and earlier, 5.2.8 and earlier, and 5.3.10 and earlier, indicating a widespread impact across the product's lifecycle. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79 which specifically addresses cross-site scripting flaws in web applications.
The technical exploitation of this vulnerability occurs when user-supplied data is improperly validated or sanitized before being rendered in web page contexts. Attackers can craft malicious input that gets executed in the victim's browser, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The impact extends beyond simple script execution as it can enable attackers to perform actions on behalf of authenticated users, making it particularly dangerous in enterprise environments where Music Station might be used for media management and sharing. The vulnerability's presence in multiple version streams suggests that the underlying code patterns responsible for input handling were consistently flawed across different development cycles.
Operationally, this vulnerability poses significant risks to organizations using QNAP Music Station for digital media management. Remote attackers could exploit the flaw to gain unauthorized access to media libraries, potentially compromising sensitive audio content or using the platform as a pivot point for further attacks within the network. The attack vector requires no special privileges or physical access, making it particularly attractive to threat actors who can leverage it from anywhere on the internet. Organizations relying on these older versions may unknowingly expose their systems to persistent threats, especially since the vulnerability allows for persistent script injection that could remain active until the application is updated or the session ends.
The mitigation strategy should focus on immediate remediation through version updates to 5.1.13, 5.2.9, or 5.3.11 depending on the affected release line. System administrators should prioritize patching across all affected installations and implement network segmentation to limit exposure. Additional protective measures include implementing web application firewalls, conducting regular security assessments, and monitoring for suspicious user activity patterns. The vulnerability aligns with ATT&CK technique T1566 which covers spearphishing attacks through malicious web content, making it relevant for organizations implementing threat hunting and incident response procedures. Organizations should also consider implementing automated vulnerability scanning to identify other potentially affected systems and maintain updated inventory of all QNAP products in use across their infrastructure.