CVE-2018-13859 in MusicCenter
Summary
by MITRE
MusicCenter / Trivum Multiroom Setup Tool V8.76 - SNR 8604.26 - C4 Professional before V9.34 build 13381 - 12.07.18, allow unauthorized remote attackers to reset the authentication via the "/xml/system/setAttribute.xml" URL, using the GET request "?id=0&attr=protectAccess&newValue=0" (a successful attack will allow attackers to login without authorization).
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Analysis
by VulDB Data Team • 09/29/2024
This vulnerability exists in the MusicCenter/Trivum Multiroom Setup Tool version 8.76 with SNR 8604.26 and C4 Professional software prior to version 9.34 build 13381 released on 12.07.18. The flaw resides in the system's authentication mechanism and specifically targets the XML-based configuration interface that manages system attributes. The vulnerability allows unauthorized remote attackers to manipulate the authentication state by exploiting a poorly secured endpoint that handles system attribute modifications. This represents a critical security flaw that directly undermines the system's access control mechanisms.
The technical implementation of this vulnerability involves a direct manipulation of the system's authentication state through a GET request to the "/xml/system/setAttribute.xml" endpoint. Attackers can exploit this by sending a specific query parameter that targets the protectAccess attribute with a newValue of 0, effectively disabling the authentication protection mechanism. This type of vulnerability falls under CWE-306 - Missing Authentication for Critical Function and CWE-287 - Improper Handling of Authentication Tickets, both of which are categorized under the OWASP Top Ten as critical security risks. The attack vector is particularly dangerous because it requires no prior authentication credentials and can be executed remotely, making it highly attractive to malicious actors.
The operational impact of this vulnerability is severe and far-reaching for organizations using affected systems. Successful exploitation allows attackers to bypass authentication entirely, granting them full administrative access to the MusicCenter/Trivum Multiroom Setup Tool. This unauthorized access could enable attackers to modify system configurations, access sensitive audio content, manipulate network settings, and potentially compromise the broader network infrastructure. The vulnerability essentially creates a backdoor that allows attackers to assume complete control of the system without detection, as the authentication mechanism is completely disabled through a simple parameter manipulation.
From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1078 - Valid Accounts, where attackers can leverage the system's trust model to gain unauthorized access. The attack can be executed through simple web requests without requiring specialized tools or deep technical knowledge, making it accessible to threat actors of varying skill levels. Organizations should immediately implement network segmentation to isolate affected systems and restrict access to the vulnerable XML endpoints. The recommended mitigation includes applying the vendor patch version 9.34 build 13381 or implementing web application firewalls to block unauthorized access to the attribute modification endpoints. Additionally, organizations should conduct thorough security audits of similar XML-based interfaces to identify and remediate potential authentication bypass vulnerabilities in their broader infrastructure.