CVE-2018-3903

23.08.2018, 15:29

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	9.9 CRITICAL	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
talos	CNA	9.9 CRITICAL	NETWORK	LOW	LOW	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 59%

Vendor	Product	Version
samsung	sth-eth-250_firmware	0.20.17

𝑥

= Vulnerable software versions

Known Exploits!

Common Weakness Enumeration

CWE-787 - Out-of-bounds Write
The software writes data past the end, or before the beginning, of the intended buffer.

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0574