---
cve: "CVE-2023-38951"
severity: "CRITICAL"
cvss: 9.8
epss: "3.3%"
vendor: "n/a"
kev: false
exploited: false
published: "2023-08-03 23:15:11"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-10T07:28:09+02:00"
---

# CVE-2023-38951

> 9.8 CRITICAL · 🧪 PoC

## Beschreibung

ZKTeco BioTime 8.5.5 through 9.x before 9.0.1 (20240617.19506) allows authenticated attackers to create or overwrite arbitrary files on the server via crafted requests to /base/sftpsetting/ endpoints that abuse a path traversal issue in the Username field and a lack of input sanitization on the SSH Key field. Overwriting specific files may lead to arbitrary code execution as NT AUTHORITY\SYSTEM.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://claroty.com/team82/disclosure-dashboard/cve-2023-38951>
- <https://github.com/omair2084/biotime-rce-8.5.5/blob/main/biotime_enum.py>
- <https://krashconsulting.com/fury-of-fingers-biotime-rce/>
- <https://www.zkteco.com/en/ZKBio_Time/ZKBioTime#Download>
- <https://www.zkteco.com/en/announcement>
- <https://sploitus.com/exploit?id=PACKETSTORM:177859>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2023-38951/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_