CVE-2024-5256: (Pwn2Own) Sonos Era 100 SMB2 Message Handling Integer Underflow Information Disclosure Vulnerability
Sonos Era 100 SMB2 Message Handling Integer Underflow Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Sonos Era 100 smart speakers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of SMB2 messages. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before reading from memory. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-22336.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-5256?
CVE-2024-5256 is classified as a medium severity vulnerability.
How do I fix CVE-2024-5256?
To mitigate CVE-2024-5256, update the Sonos Era 100 to the latest firmware version available.
What type of vulnerability is CVE-2024-5256?
CVE-2024-5256 is an integer underflow vulnerability that allows information disclosure.
Who can exploit CVE-2024-5256?
CVE-2024-5256 can be exploited by unauthenticated, network-adjacent attackers.
What are the affected versions in CVE-2024-5256?
CVE-2024-5256 affects Sonos Era 100 running firmware version 15.9.