Samsung SmartThings Hub STH-ETH-250 0.20.17 hubCore Process integer underflow
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.7 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Samsung SmartThings Hub STH-ETH-250 0.20.17 (Router Operating System). Affected is an unknown functionality of the component hubCore Process. The manipulation with an unknown input leads to a integer underflow vulnerability. CWE is classifying the issue as CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This is going to have an impact on availability. CVE summarizes:
An exploitable integer underflow vulnerability exists in the ZigBee firmware update routine of the hubCore binary of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process incorrectly handles malformed files existing in its data directory, leading to an infinite loop, which eventually causes the process to crash. An attacker can send an HTTP request to trigger this vulnerability.
The bug was discovered 07/26/2018. The weakness was presented 08/28/2018 by Cisco with Cisco Talos (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2018-3926 since 01/01/2018. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.
The vulnerability was handled as a non-public zero-day exploit for at least 33 days. During that time the estimated underground price was around $0-$5k.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
See 123347, 123346 and 123345 for similar entries.
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.7VulDB Meta Temp Score: 4.7
VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.5
NVD Vector: 🔍
CNA Base Score: 5.3
CNA Vector (Talos): 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Integer underflowCWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
01/01/2018 🔍07/26/2018 🔍
08/26/2018 🔍
08/28/2018 🔍
08/28/2018 🔍
08/29/2018 🔍
05/06/2023 🔍
Sources
Vendor: samsung.comAdvisory: securityfocus.com⛔
Researcher: Cisco
Organization: Cisco Talos
Status: Not defined
CVE: CVE-2018-3926 (🔍)
SecurityFocus: 105162 - Samsung SmartThings Hub CVE-2018-3926 Denial of Service Vulnerability
See also: 🔍
Entry
Created: 08/29/2018 08:34Updated: 05/06/2023 08:18
Changes: 08/29/2018 08:34 (61), 03/19/2020 08:11 (4), 05/06/2023 08:18 (14)
Complete: 🔍
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