On Samsung SmartThings Hub STH-ETH-250 devices with 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. An attacker can send an HTTP request to trigger this vulnerability. A strcpy overflows the destination buffer, which has a size of 40 bytes. An attacker can send an arbitrarily long "user" value in order to exploit this vulnerability.
Published 2018-08-23 15:29:01
Updated 2023-04-26 18:38:45
Source Talos
View at NVD,   CVE.org
Vulnerability category: OverflowMemory Corruption

Exploit prediction scoring system (EPSS) score for CVE-2018-3863

0.10%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-3863

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.0
HIGH AV:N/AC:L/Au:S/C:C/I:C/A:C
8.0
10.0
NIST
9.9
CRITICAL CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1
6.0
Talos
9.9
CRITICAL CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1
6.0
NIST

CWE ids for CVE-2018-3863

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-3863

Products affected by CVE-2018-3863

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