(Pwn2Own) Sonos One Speaker libsmb2 Use-After-Free Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Sonos One Speaker. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the processing of the SMB directory query command. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of root.
Additional Details
Sonos users with the S2 app installed should ensure their system is running software version 15.1 or later. Sonos users with the S1 app installed should be running version 11.7.1 or later. Users can check which software version they are running in the Sonos app > Settings > System > About My System.
https://support.sonos.com/en-us/article/release-notes-for-sonos-s2
Disclosure Timeline
- 2023-02-08 - Vulnerability reported to vendor
- 2023-04-14 - Coordinated public release of advisory
Credit
Toan (suto) Pham and Tri Dang from Qrious Secure
