Yahei-PHP Prober 0.4.7 HTML Injection

`  
Yahei-PHP Prober v0.4.7 (speed) Remote HTML Injection Vulnerability  
  
  
Vendor: Yahei.Net  
Product web page: http://www.yahei.net  
Affected version: 0.4.7  
  
Summary: Detection of system web server operating environment.  
  
Desc: Input passed to the GET parameter 'speed' is not properly  
sanitised before being returned to the user. This can be exploited  
to execute arbitrary HTML code in a user's browser session in context  
of an affected site.  
  
-----------------------------------------------------------------------  
/prober.php:  
---------  
  
206: elseif(isset($_GET['speed']) and $_GET['speed']>0)  
207: {  
208: $speed=round(100/($_GET['speed']/1000),2); //下载速度: $speed kb/s  
209: }  
...  
...  
1393: <?php echo (isset($_GET['speed']))?"Download 1000KB Used <font color='#cc0000'>".$_GET['speed']."</font> Millisecond, Download Speed: "."<font color='#cc0000'>".$speed."</font>"." kb/s":"<font color='#cc0000'>&nbsp;No Test&nbsp;</font>" ?>  
  
-----------------------------------------------------------------------  
  
Tested on: OneinStack (Linux 3.10.0-862.14.4.el7.x86_64)  
nginx/1.14.0  
PHP/7.2.11  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2019-5531  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5531.php  
  
  
16.07.2019  
  
--  
  
  
PoC:  
  
http://domain.local:80/prober.php?speed=<marquee>marq</marquee>  
`