CVE-2018-3866 — Out-of-bounds Write in Samsung

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer4 documents4 sources
Severity
9.9CRITICALNVD
EPSS
0.5%
top 35.97%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
SamsungSamsung Sth-eth-250 Firmware
Timeline
PublishedAug 23
Latest updateApr 28

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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 3.1 | Impact: 6.0

Affected Packages2 packages

▶CVEListV5samsung/samsungSamsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17

🔴Vulnerability Details

3
OSV
mistral, python-mistral-lib vulnerabilities↗2025-04-28
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GHSA
GHSA-mmxq-hfwc-p6xp: An exploitable buffer overflow vulnerability exists in the samsungWifiScan handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250↗2022-05-13
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CVEList
CVE-2018-3866: An exploitable buffer overflow vulnerability exists in the samsungWifiScan handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250↗2018-08-23
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CVE-2018-3866 — Out-of-bounds Write in Samsung | cvebase