---
cve: "CVE-2020-1712"
severity: "HIGH"
cvss: 7.8
epss: "46%"
vendor: "[UNKNOWN]"
kev: false
exploited: false
published: "2020-03-31 17:15:26"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T17:29:36+02:00"
---

# CVE-2020-1712

> 7.8 HIGH · 🧪 PoC

## Beschreibung

A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 1068447e6954dc6ce52f099ed174c442cb89ed54 (Commit)
- 637486261528e8aa3da9f26a4487dc254f4b7abb (Commit)

## Referenzen

- <https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712>
- <https://www.openwall.com/lists/oss-security/2020/02/05/1>
- <https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2>
- <https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54>
- <https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb>
- <https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d>
- <https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-1712) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_