Integer overflow in Sonos Era 100
CVE-2024-5256
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.
EPSS: 0.004 (34.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Sonos Era 100 — versions 15.9 (build 75146030)
- Sonos Era_100
- Sonos Era_100_firmware — versions 15.9
Weakness classification (CWE)
References
- zdi-disclosures@trendmicro.com (x_research-advisory, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-5256?
- CVE-2024-5256 is a medium-severity vulnerability in Sonos Era 100, classified under Integer Underflow. CVSS score: 4.3/10. Published 2024-06-06.
- How severe is CVE-2024-5256?
- Medium severity. CVSS v3 base score is 4.3 out of 10.