---
cve: "CVE-2018-7798"
severity: "HIGH"
cvss: 8.2
epss: "66%"
vendor: "Schneider Electric SE"
kev: false
exploited: false
published: "2018-11-02 17:29:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T01:54:24+02:00"
---

# CVE-2018-7798

> 8.2 HIGH

## Beschreibung

A Insufficient Verification of Data Authenticity (CWE-345) vulnerability exists in the Modicon M221, all versions, which could cause a change of IPv4 configuration (IP address, mask and gateway) when remotely connected to the device.

## CVSS-Vektor

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

| 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 | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Gering | warn |

## Schwachstellen-Klasse

- **CWE-345** — Insufficient Verification of Data Authenticity
  The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

## Angriffsmuster (CAPEC)

- [CAPEC-111 — JSON Hijacking (aka JavaScript Hijacking)](https://capec.mitre.org/data/definitions/111.html) _(Severity: High)_
- [CAPEC-141 — Cache Poisoning](https://capec.mitre.org/data/definitions/141.html) _(Severity: High)_
- [CAPEC-142 — DNS Cache Poisoning](https://capec.mitre.org/data/definitions/142.html) _(Severity: High)_
- [CAPEC-148 — Content Spoofing](https://capec.mitre.org/data/definitions/148.html) _(Severity: Medium)_
- [CAPEC-218 — Spoofing of UDDI/ebXML Messages](https://capec.mitre.org/data/definitions/218.html) _(Severity: Medium)_
- [CAPEC-384 — Application API Message Manipulation via Man-in-the-Middle](https://capec.mitre.org/data/definitions/384.html) _(Severity: Low)_
- [CAPEC-385 — Transaction or Event Tampering via Application API Manipulation](https://capec.mitre.org/data/definitions/385.html) _(Severity: Medium)_
- [CAPEC-386 — Application API Navigation Remapping](https://capec.mitre.org/data/definitions/386.html) _(Severity: Medium)_

## ATT&CK-Techniken

- [T1557.002 — Adversary-in-the-Middle: ARP Cache Poisoning](https://attack.mitre.org/techniques/T1557/002/)
- [T1584.002 — Compromise Infrastructure: DNS Server](https://attack.mitre.org/techniques/T1584/002/)
- [T1491 — Defacement](https://attack.mitre.org/techniques/T1491/)

## Referenzen

- <http://www.securityfocus.com/bid/105970>
- <https://www.schneider-electric.com/en/download/document/SEVD-2018-270-01/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2018-7798) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_