CVE-2018-3903

2018-08-2315:00:00

talos

www.cve.org

CVSS3

9.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.8

Confidence

High

EPSS

0.001

Percentile

40.0%

JSON

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. The memcpy call overflows the destination buffer, which has a size of 512 bytes. An attacker can send an arbitrarily long “url” value in order to overwrite the saved-PC with 0x42424242.

CNA Affected

[
  {
    "product": "Samsung",
    "vendor": "Talos",
    "versions": [
      {
        "status": "affected",
        "version": "Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17"
      }
    ]
  }
]