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>