CVE-2018-3877

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware…

Critical · published September 21, 2018

CVSS v3.0
9.9
EPSS
2%
Percentile
78.4
In the wild
Unconfirmed
What it is

🔥 A single buffer overflow in Samsung's SmartThings Hub could let attackers run wild! Think of it like a suitcase that only has space for 160 items, but someone manages to shove in an entire wardrobe — it’s going to burst open! This vulnerability allows a malicious user to overflow the buffer, significantly jeopardizing the system's integrity. If exploited, an attacker could gain control over the SmartThings Hub's HTTP server, leading to potential unauthorized access to connected devices. This poses an enormous risk, as they could manipulate or disable your smart appliances, exposing your home to serious vulnerabilities and privacy breaches.

Put simply

Think of it like a suitcase that only has space for 160 items, but someone manages to shove in an entire wardrobe — it’s going to burst open! This vulnerability allows a malicious user to overflow the buffer, significantly jeopardizing the system's integrity. This buffer overflow vulnerability arises from the misuse of the strncpy function, which fails to properly limit the size of an incoming directory value, allowing an attacker to overflow the destination buffer of 160 bytes.

What to do

If exploited, an attacker could gain control over the SmartThings Hub's HTTP server, leading to potential unauthorized access to connected devices. This poses an enormous risk, as they could manipulate or disable your smart appliances, exposing your home to serious vulnerabilities and privacy breaches. To protect yourself, it's crucial to patch the SmartThings Hub's firmware to version 0.20.18 or later as soon as possible. Additionally, ensure all security settings are configured correctly to minimize exposure to external threats. You've got this! By acting now, you'll patch up your SmartThings Hub and can rest easy knowing you've strengthened your smart home security! 🛡️

The record
Technical detail
CVSS v3.0
9.9 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01804 · 78.4th percentile
Published
2018-09-21T14:00Z
EPSS history
Timeline
  • 21 SEP 14:00Z
    An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware…
    cvelistv5