CVE-2018-3866

CRITICAL

Samsung STH-ETH-250 Firmware 0.20.17 - Stack-Based Buffer Overflow via HTTP Server samsungWifiScan Handler

Title source: llm

Description

An exploitable buffer overflow vulnerability exists in the samsungWifiScan handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. The strcpy at [8] overflows the destination buffer, which has a size of 40 bytes. An attacker can send an arbitrarily long 'callbackUrl' value in order to exploit this vulnerability.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0548

Scores

CVSS v3 9.9

EPSS 0.0038

EPSS Percentile 59.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

CWE

CWE-787

Status published

Products (1)

samsung/sth-eth-250_firmware 0.20.17

Published Aug 23, 2018

Tracked Since Feb 18, 2026