CVE-2022-24049
📋 TL;DR
This is a critical remote code execution vulnerability in Sonos One Speaker systems that allows unauthenticated attackers to execute arbitrary code as root. The flaw exists in the ALAC audio codec implementation where improper length validation leads to stack-based buffer overflow. Affected systems include Sonos One Speaker S2 systems before version 3.4.1 and S1 systems before 11.2.13 build 57923290.
💻 Affected Systems
- Sonos One Speaker
📦 What is this software?
S1 by Sonos
S2 by Sonos
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of affected Sonos speakers with root-level code execution, allowing attackers to join devices to botnets, exfiltrate network data, pivot to other devices, or render devices unusable.
Likely Case
Remote code execution leading to device compromise, potential data exfiltration from the local network, and use as foothold for further attacks.
If Mitigated
Limited impact if devices are isolated from untrusted networks and patched promptly, though risk remains from any network-connected audio streams.
🎯 Exploit Status
No authentication required, stack-based buffer overflow with root privileges. ZDI advisory suggests reliable exploitation is feasible.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: S2: 3.4.1 or later; S1: 11.2.13 build 57923290 or later
Vendor Advisory: https://support.sonos.com/en-us/article/sonos-security-update
Restart Required: Yes
Instructions:
1. Open Sonos app. 2. Go to Settings > System > System Updates. 3. Check for updates. 4. Install available update. 5. System will restart automatically.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Sonos devices on separate VLAN from critical systems
Disable Remote Access
allTurn off remote access in Sonos settings to limit attack surface
🧯 If You Can't Patch
- Disconnect from internet and use only local network audio sources
- Place behind firewall with strict inbound/outbound rules limiting network traffic
🔍 How to Verify
Check if Vulnerable:
Check Sonos app: Settings > System > About My System. Look for System Version.Check Version:
No CLI command. Use Sonos mobile/desktop app: Settings > System > About My SystemVerify Fix Applied:
Verify version is S2: 3.4.1+ or S1: 11.2.13 build 57923290+ in Sonos app settings📡 Detection & Monitoring
Log Indicators:
- Unusual network traffic to/from Sonos devices
- Multiple failed audio stream attempts
- Unexpected device reboots
Network Indicators:
- Malformed ALAC audio streams to port 1400
- Unexpected outbound connections from Sonos devices
- Traffic patterns suggesting command and control
SIEM Query:
device.vendor:Sonos AND (event.action:restart OR network.destination.port:1400 AND alert.severity:high)