---
cve: "CVE-2018-15473"
severity: "MEDIUM"
cvss: 5.9
epss: "98.6%"
vendor: "n/a"
kev: false
exploited: false
published: "2018-08-17 19:29:00"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T08:42:10+02:00"
---

# CVE-2018-15473

> 5.9 MEDIUM · 🧪 PoC

## Beschreibung

OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.

## CVSS-Vektor

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

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

## Exploit-Evidenz

- [EDB-45233 — OpenSSH 2.3 < 7.7 - Username Enumeration](https://www.exploit-db.com/exploits/45233) ✅
- [EDB-45210 — OpenSSH 2.3 < 7.7 - Username Enumeration (PoC)](https://www.exploit-db.com/exploits/45210) ✅
- [EDB-45939 — OpenSSH < 7.7 - User Enumeration (2)](https://www.exploit-db.com/exploits/45939)

## Patch verfügbar (OSV)

- 779974d35b4859c07bc3cb8a12c74b43b0a7d1e0 (Commit)

## Referenzen

- <https://security.gentoo.org/glsa/201810-03>
- <http://www.securitytracker.com/id/1041487>
- <https://www.exploit-db.com/exploits/45233/>
- <https://bugs.debian.org/906236>
- <https://www.exploit-db.com/exploits/45210/>
- <https://security.netapp.com/advisory/ntap-20181101-0001/>
- <https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0>
- <https://usn.ubuntu.com/3809-1/>
- <https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html>
- <http://www.securityfocus.com/bid/105140>
- <https://www.debian.org/security/2018/dsa-4280>
- <https://www.exploit-db.com/exploits/45939/>
- <https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011>
- <http://www.openwall.com/lists/oss-security/2018/08/15/5>
- <https://access.redhat.com/errata/RHSA-2019:0711>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2018-15473) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_