PT-2018-16295 · Samsung · Samsung Smartthings Hub

Published 2018-08-23 · Updated 2023-05-16 · CVE-2018-3903

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Samsung SmartThings Hub STH-ETH-250 version 0.20.17

Description The video-core process in the Samsung SmartThings Hub STH-ETH-250 device 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 issue. 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.

Recommendations For Samsung SmartThings Hub STH-ETH-250 version 0.20.17, as a temporary workaround, consider restricting access to the video-core process until a patch is available. Avoid using arbitrarily long url values in HTTP requests to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2018-3903

Affected Products

Samsung Smartthings Hub

References · 5

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2018-0574 · Exploit
• 🔥 https://talosintelligence.com/reports/TALOS-2018-0574 · Exploit
• https://osv.dev/vulnerability/CVE-2018-3903 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-3903 · Security Note
• https://t.me/cvenotify/50550 · Telegram Post