Security readout for executives and security teams
Plain-English summary
This issue affects Samsung SmartThings Hub STH-ETH-250 firmware 0.20.17. A malformed or oversized region value can overflow memory in the video-core process after an HTTP-triggered path. Successful exploitation could compromise confidentiality, integrity, and availability of the hub, but the CVSS vector indicates high privileges, local access, and high complexity.
Executive priority
Treat this as a targeted high-risk device issue, not a broad enterprise emergency. Prioritize if SmartThings hubs are used in offices, facilities, labs, or executive residences, especially where local network access is weakly controlled.
Technical view
The video-core process insecurely copies fields from the shard table in its SQLite database. The region value can exceed a 16-byte stack buffer used with strcpy, causing a stack-based buffer overflow. The public CVSS v3.0 score is 7.5 with AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
Likely exposure
Exposure is limited to organizations or homes still running Samsung SmartThings Hub STH-ETH-250 firmware 0.20.17. The provided sources do not identify other models, later firmware, internet-wide exposure, or cloud-side impact.
Exploitation context
The source says an HTTP request can trigger the vulnerable path, but the CVSS vector indicates local access, high privileges, and high attack complexity. CISA KEV status is false in the bundle, so there is no source-backed evidence here of known active exploitation.
Researcher notes
Evidence supports a stack overflow in video-core involving shard.region copied into a 16-byte destination. The bundle does not provide exploit status, affected versions beyond 0.20.17, or a named fixed firmware. Avoid assuming broader Samsung IoT exposure without vendor confirmation.
Mitigation direction
- Identify Samsung SmartThings Hub STH-ETH-250 devices in inventory.
- Check whether firmware version 0.20.17 is present.
- Apply Samsung-supported firmware updates after verifying vendor guidance.
- Restrict hub management and HTTP exposure to trusted local networks.
- Monitor SmartThings hub behavior for unexpected restarts or service failures.
Validation and detection
- Confirm device model is STH-ETH-250, not another SmartThings generation.
- Record current firmware version from administrative or asset-management sources.
- Review network controls limiting local access to the hub.
- Check vendor and Talos references for fixed-version guidance.
- Document any remaining 0.20.17 devices as accepted or unresolved risk.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-3917 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H0.86Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0581CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.