CVE-2023-50809
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code within the kernel of affected Sonos devices by exploiting a stack buffer overflow in the wireless driver during WPA2 handshake negotiation. Attackers can potentially gain full control of the device without authentication. This affects multiple Sonos speaker models including Amp, Arc, Beam, and Five.
💻 Affected Systems
- Sonos Amp
- Sonos Arc
- Sonos Arc SL
- Sonos Beam
- Sonos Beam Gen 2
- Sonos Beam SL
- Sonos Five
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker gains kernel-level code execution, takes full control of device, pivots to internal network, and establishes persistent access.
Likely Case
Remote attacker executes code on vulnerable Sonos device, potentially using it as foothold for further network attacks or to disrupt audio services.
If Mitigated
With proper network segmentation and updated firmware, impact is limited to isolated device compromise without network propagation.
🎯 Exploit Status
Exploitation requires proximity to wireless network or ability to send crafted packets to device's wireless interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: S1 Release 11.12 or S2 Release 15.9
Vendor Advisory: https://www.sonos.com/en-us/security-advisory-2024-0001
Restart Required: Yes
Instructions:
1. Open Sonos app. 2. Go to Settings > System > System Updates. 3. Check for updates. 4. Install S1 Release 11.12 or S2 Release 15.9. 5. Device will restart automatically.
🔧 Temporary Workarounds
Disable Wireless
allDisable Wi-Fi functionality on affected Sonos devices and use wired Ethernet only
Sonos app: Settings > System > Network > Wireless Setup > Disable Wireless
Network Segmentation
allIsolate Sonos devices on separate VLAN with strict firewall rules
🧯 If You Can't Patch
- Physically disconnect from network or power off devices
- Implement strict network access controls to limit traffic to Sonos devices
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Sonos app: Settings > System > About My SystemCheck Version:
Sonos app: Settings > System > About My SystemVerify Fix Applied:
Confirm firmware version shows S1 Release 11.12 or higher, or S2 Release 15.9 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual wireless driver crashes
- Kernel panic logs
- Failed WPA2 handshake attempts
Network Indicators:
- Malformed 802.11 packets targeting Sonos MAC addresses
- Unusual traffic patterns from Sonos devices
SIEM Query:
source="sonos" AND (event_type="crash" OR event_type="kernel_panic")