CVE-2023-50809 is a high-severity vulnerability found in certain Sonos products, specifically those prior to S1 Release 11.12 and S2 Release 15.9. This vulnerability allows a lack of proper validation in the mt_7615.ko wireless driver during the negotiation of a WPA2 four-way handshake, which can lead to a stack buffer overflow. The implications of this vulnerability are significant, as it can result in remote code execution within the kernel, thereby compromising the integrity and confidentiality of the affected systems.
The CVSS score for this vulnerability is 7.8, categorizing it as high severity. This score highlights the critical nature of the vulnerability, which can be exploited with low attack complexity and minimal privileges required. Given the potential for severe impact, organizations should prioritize patching immediately.
Affected products include various Sonos devices such as Amp, Arc, Arc SL, Beam, Beam Gen 2, Beam SL, and Five. As a result, the risk to organizations includes unauthorized access, data breaches, and potential disruption of services, making the urgency for remediation paramount.
Currently, there is no known public exploit for this vulnerability, and it has not been included in the Known Exploited Vulnerabilities (KEV) catalog. However, organizations must remain vigilant and proactive in addressing this vulnerability to prevent potential exploitation.
Organizations should conduct a thorough review of their Sonos device deployments and ensure that they are updated to the latest firmware versions to mitigate the risks associated with CVE-2023-50809.
Vulnerability Details
The official CVE description states that in certain Sonos products before S1 Release 11.12 and S2 Release 15.9, the mt_7615.ko wireless driver does not properly validate an information element during negotiation of a WPA2 four-way handshake. This leads to a stack buffer overflow, resulting in remote code execution within the kernel.
The CVSS score of 7.8 indicates high severity, with potential impacts on confidentiality, integrity, and availability marked as high. The attack vector is classified as local, requiring low attack complexity, and only low privileges are necessary for exploitation. User interaction is not required, making this vulnerability particularly concerning.
Affected products include Amp, Arc, Arc SL, Beam, Beam Gen 2, Beam SL, and Five. The vulnerability was published on August 12, 2024, and is classified under CWE-121.
Technical Analysis
The root cause of CVE-2023-50809 lies in the failure of the mt_7615.ko wireless driver to adequately validate an information element during the negotiation of a WPA2 four-way handshake. This oversight can allow attackers to manipulate the handshake process, leading to a stack buffer overflow.
The attack vector is local, meaning that an attacker needs to have access to the local network to exploit this vulnerability. The attack complexity is low, indicating that the exploitation can be performed without significant effort or resources. The privileges required are also low, meaning that an attacker may not need special permissions to carry out the exploit.
User interaction is not required, which increases the risk as the attack can be executed without any action from the target user. The potential impacts of this vulnerability are significant, with high potential for confidentiality, integrity, and availability impacts.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2023-50809 is substantial, particularly for organizations using affected Sonos products. The potential for remote code execution within the kernel poses a critical threat, as attackers may gain full control over the device, leading to unauthorized access to sensitive data and disruption of services.
This vulnerability could serve as a vector for broader attacks, potentially affecting not only the individual devices but also the network infrastructure they are connected to. Organizations must consider the blast radius of this vulnerability, as compromised devices could lead to further exploitation within the network.
Given the CVSS score of 7.8, organizations should prioritize addressing this vulnerability in their patch management cycles. Failure to do so may expose them to significant risks, including data breaches and operational disruptions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Sonos products include those prior to S1 Release 11.12 and S2 Release 15.9. Organizations should ensure that their devices are updated to these versions or later to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To mitigate the risks associated with CVE-2023-50809, organizations should promptly apply patches or updates provided by Sonos. It is crucial to monitor for announcements regarding the availability of these updates and ensure that all affected devices are remediated.
In the absence of an immediate patch, organizations should consider implementing network controls to restrict access to vulnerable devices and monitor network traffic for any unusual activity. Regular security assessments and penetration testing can also help identify and address potential vulnerabilities proactively.
For further guidance, organizations may refer to the penetration testing services provided by AppSecure.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts related to CVE-2023-50809. Look for unusual authentication attempts, unexpected wireless connections, or signs of network traffic anomalies that may indicate an ongoing attack.
Behavioral anomalies, such as changes in device performance or unauthorized access attempts, should also be noted. Implementing network signatures to detect potential exploit traffic can further enhance detection efforts.
AppSecure Threat Intelligence Insight
CVE-2023-50809 represents a significant risk for organizations utilizing Sonos products. The lack of proper validation in the wireless driver could serve as an entry point for attackers, emphasizing the need for organizations to maintain robust security practices.
Security teams should consider reviewing their vulnerability management program to ensure that similar vulnerabilities are identified and addressed in a timely manner.
Additionally, organizations should stay informed about emerging threats and vulnerabilities by following security advisories and industry best practices. Regularly scheduled penetration testing can help identify potential weaknesses before they can be exploited.
Finally, organizations should consider establishing a culture of security awareness, ensuring that all employees understand the importance of security practices in mitigating risks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)