What is CVE-2018-3909?

CVE-2018-3909 is a high-severity vulnerability in Samsung Sth-Eth-250, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 8.6/10. Published 2018-08-24.

How severe is CVE-2018-3909?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Samsung Sth-Eth-250

CVE-2018-3909

An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly handles pipelined HTTP requests, which allows successive requests to overwrite the previously parsed HTTP method, 'onmessagecomplete' callback. An attacker can send an HTTP request to trigger this vulnerability.

Vulnerability class: HTTP Request Smuggling

EPSS: 0.013 (66.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.

Affected products

Samsung Sth-eth-250
Samsung Sth-eth-250_firmware — versions 0.20.17
Talos Samsung — versions Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17

Weakness classification (CWE)

CWE-444 — Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling)

References

talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-3909?: CVE-2018-3909 is a high-severity vulnerability in Samsung Sth-Eth-250, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 8.6/10. Published 2018-08-24.
How severe is CVE-2018-3909?: High severity. CVSS v3 base score is 8.6 out of 10.