CVE-2017-17751 in Soundtouch
Summary
by MITRE
Bose SoundTouch devices allows remote attackers to achieve remote control via a crafted web site that uses the WebSocket Protocol.
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Analysis
by VulDB Data Team • 01/16/2020
CVE-2017-17751 represents a critical remote code execution vulnerability affecting Bose SoundTouch smart speaker devices that enables attackers to gain unauthorized control through malicious web content leveraging the WebSocket protocol. This vulnerability resides in the device's web interface implementation and specifically targets the WebSocket communication channel used for device control and configuration. The flaw allows remote attackers to craft malicious websites that can establish WebSocket connections to vulnerable SoundTouch devices, thereby bypassing normal authentication mechanisms and executing arbitrary commands on the affected hardware. The vulnerability stems from insufficient input validation and improper handling of WebSocket frames within the device's web server implementation, creating an attack surface that can be exploited without requiring physical access or prior authentication credentials. This issue affects multiple generations of Bose SoundTouch devices including models such as the SoundTouch 10, 20, 300, and 3000 series, all of which utilize the same vulnerable web interface architecture.
The technical exploitation of this vulnerability follows a specific attack pattern that aligns with CWE-20, which describes improper input validation in software systems. Attackers can construct malicious web pages that establish WebSocket connections to SoundTouch devices on port 8080, using the device's default web interface port. The vulnerability manifests when the device's WebSocket implementation fails to properly sanitize incoming data, allowing crafted payloads to be interpreted as commands rather than benign communication data. This weakness creates a persistent attack vector that can be delivered through various means including phishing websites, malicious advertisements, or compromised web content that users might visit while connected to the same network as the vulnerable device. The attack chain typically begins with a user visiting a malicious website, which then establishes a WebSocket connection to the target SoundTouch device, subsequently executing commands that can include device configuration changes, audio playback manipulation, or even firmware modification.
The operational impact of CVE-2017-17751 extends beyond simple unauthorized access to represent a significant threat to home network security and user privacy. Once compromised, SoundTouch devices can be used as persistent footholds for broader network attacks, as they maintain connectivity to the local network and can potentially serve as relay points for other malicious activities. The vulnerability creates a persistent backdoor that remains active as long as the device remains connected to the network, making it particularly dangerous for users who may not regularly update their device firmware or who are unaware of the security implications. From an attacker perspective, this vulnerability maps directly to several ATT&CK techniques including T1059 for command and scripting interpreter and T1071 for application layer protocol usage, as attackers can leverage the device's legitimate communication channels to execute malicious code. The device's audio capabilities also present additional attack vectors for surveillance or disruption, as compromised speakers can be used to play malicious audio content or potentially be leveraged for voice-based attacks.
Mitigation strategies for CVE-2017-17751 should focus on both immediate defensive measures and long-term architectural improvements. Immediate remediation includes disconnecting vulnerable devices from untrusted networks and ensuring network segmentation to prevent lateral movement once a device is compromised. Network administrators should implement firewall rules that restrict access to port 8080 on SoundTouch devices from external networks and consider disabling WebSocket functionality if not required for device operation. Bose has released firmware updates addressing this vulnerability, and users should immediately apply these patches to all affected devices. Additionally, organizations should implement network monitoring to detect unusual WebSocket traffic patterns that might indicate exploitation attempts. The vulnerability highlights the importance of secure web application development practices and proper input sanitization as outlined in OWASP Top Ten and NIST cybersecurity guidelines, emphasizing that WebSocket implementations must properly validate and sanitize all incoming data to prevent injection attacks. Regular security assessments of IoT devices and network monitoring should be implemented as part of comprehensive cybersecurity frameworks to detect similar vulnerabilities in other networked devices.