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Sth Eth 250 Firmware CVE-2018-3911

HIGH
HTTP Response Splitting (CWE-113)
2018-08-23 talos-cna@cisco.com
8.6
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization HTTP response header sanitization
Impact

CVSS score of 8.6 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 1.2% exploitation probability (EPSS)

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AnalysisAI

An exploitable HTTP header injection vulnerability exists in the remote servers of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-113. An exploitable HTTP header injection vulnerability exists in the remote servers of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process listens on port 39500 and relays any unauthenticated message to SmartThings' remote servers, which insecurely handle JSON messages, leading to partially controlled requests generated toward the internal video-core process. An attacker can send an HTTP request to trigger this vulnerability. Affected products include: Samsung Sth-Eth-250 Firmware. Version information: version 0.20.17..

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.6 HIGH
AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

DescriptionNVD

An exploitable HTTP header injection vulnerability exists in the remote servers of Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process listens on port 39500 and relays any unauthenticated message to SmartThings' remote servers, which insecurely handle JSON messages, leading to partially controlled requests generated toward the internal video-core process. An attacker can send an HTTP request to trigger this vulnerability.

Threat Intelligence Overview

EPSS Score
1.2%
Top 35% exploitable
Exploit
POC
Public exploit code exists
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 1.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +43
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Affected Products (CPE)NVD

cpe:2.3:o:samsung:sth-eth-250_firmware:0.20.17:*:*:*:*:*:*:*
CVE-2018-3907 CRITICAL POC
10.0 Aug 24

An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub STH-ET

CVE-2018-3877 CRITICAL POC
9.9 Sep 21

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung Sm

CVE-2018-3874 CRITICAL POC
9.9 Sep 21

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung Sm

CVE-2018-3873 CRITICAL POC
9.9 Sep 21

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung Sm

CVE-2018-3875 CRITICAL POC
9.9 Sep 10

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung Sm

CVE-2018-3904 CRITICAL POC
9.9 Aug 27

An exploitable buffer overflow vulnerability exists in the camera 'update' feature of video-core's HTTP server of Samsun

CVE-2018-3880 CRITICAL POC
9.9 Aug 23

An exploitable stack-based buffer overflow vulnerability exists in the database 'find-by-cameraId' functionality of vide

CVE-2018-3872 CRITICAL POC
9.9 Aug 23

An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung Sm

CVE-2018-3866 CRITICAL POC
9.9 Aug 23

An exploitable buffer overflow vulnerability exists in the samsungWifiScan handler of video-core's HTTP server of Samsun

CVE-2018-3856 CRITICAL POC
9.9 Aug 23

An exploitable vulnerability exists in the smart cameras RTSP configuration of the Samsung SmartThings Hub STH-ETH-250 -

CVE-2018-3925 CRITICAL POC
9.9 Aug 23

An exploitable buffer overflow vulnerability exists in the remote video-host communication of video-core's HTTP server o

CVE-2018-3919 CRITICAL POC
9.9 Aug 23

An exploitable stack-based buffer overflow vulnerability exists in the retrieval of database fields in video-core's HTTP

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