CVE-2018-3866 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.9