← Advisories

Digital Scribe 1.5 (register_form()) Multiple POST XSS Vulnerabilities

Medium
Advisory ID
ZSL-2011-5030
Release Date
31 July 2011
Vendor
Affected Version
1.5
CVE
N/A
Tested On
Microsoft Windows XP Professional SP3 (EN), Apache 2.2.14 (Win32), PHP 5.3.1, MySQL 5.1.41
Summary

The Digital Scribe is a free, intuitive system designed to help teachers put student work and homework assignments online.

Description

Digital Scribe suffers from multiple POST XSS vulnerabilities. Input thru the POST parameters 'title', 'last' and 'email' in register.php is not sanitized allowing the attacker to execute HTML code into user's browser session on the affected site.

register.php ---------------- 21: function register_form() { 22: global $user, $email, $last, $title, $passuno, $passuno2, $_POST, $_GET; 23: include("access.inc.php"); 24: ?> 25: <FORM METHOD=POST ACTION=register.php> 26: <table><tr><td align=right> 27: Title:</td><td><INPUT TYPE=TEXT NAME=title VALUE="<?php echo ($_POST['title']); ?>" SIZE=4> (Mr., Mrs., etc) 28: </td></tr> 29: <tr><td align=right>Last Name:</td><td><INPUT TYPE=TEXT NAME=last VALUE="<?php echo ($_POST['last']); ?>"></td></tr> 30: <tr><td align=right>Password:</td><td><INPUT TYPE=PASSWORD NAME=passuno></td></tr> 31: <tr><td> 32: Password Again:</td><td><INPUT TYPE=passWORD NAME=passuno2></td></tr> 33: <tr><td align=right> 34: E-Mail:</td><td><INPUT TYPE=TEXT NAME=email SIZE=34 VALUE=<?php echo $_POST['email'] ?>></td> 35: </tr><tr><td> 36: <?php 37: IF($_GET['type']=='a' OR $_POST['announcements']==4) { 38: echo '<INPUT TYPE=HIDDEN NAME=announcements VALUE=4>'; 39: }
Proof of Concept
Disclosure Timeline
28.07.2011Vulnerabilities discovered.
28.07.2011Initial contact with the vendor.
30.07.2011No reply from vendor.
31.07.2011Public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
31.07.2011Initial release
01.08.2011Added reference [3], [4] and [5]
04.08.2011Added reference [6]