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Yahei-PHP Prober v0.4.7 (speed) Remote HTML Injection Vulnerability

🗓️ 24 Jul 2019 00:00:00Reported by Gjoko KrsticType 
zeroscience
 zeroscience
🔗 www.zeroscience.mk👁 345 Views

Yahei-PHP Prober v0.4.7 Remote HTML Injection Vulnerability. Input 'speed' parameter not properly sanitized, leading to XSS

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<html><body><p>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']&gt;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'>".$_GET['speed']." Millisecond, Download Speed: "."<font color="#cc0000">".$speed."</font>"." kb/s":"<font color="#cc0000"> No Test </font>" ?&gt;

-----------------------------------------------------------------------

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>
</p></body></html>

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24 Jul 2019 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 45.1
CVSS 3.16.1
EPSS0.00074
SSVC
345