---
cve: "CVE-2017-9023"
severity: "HIGH"
cvss: 7.5
epss: "2.2%"
vendor: "n/a"
kev: false
exploited: false
published: "2017-06-08 16:29:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T23:47:45+02:00"
---

# CVE-2017-9023

> 7.5 HIGH

## Beschreibung

The ASN.1 parser in strongSwan before 5.5.3 improperly handles CHOICE types when the x509 plugin is enabled, which allows remote attackers to cause a denial of service (infinite loop) via a crafted certificate.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <http://www.securityfocus.com/bid/98756>
- <https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-%28cve-2017-9023%29.html>
- <http://www.debian.org/security/2017/dsa-3866>
- <http://www.ubuntu.com/usn/USN-3301-1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2017-9023) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_