exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Active Calendar 1.2.0 Cross Site Scripting

Active Calendar 1.2.0 Cross Site Scripting
Posted Jan 11, 2010
Authored by Martin Barbella

Active Calendar version 1.2.0 suffers from a cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | 22b45e544fd05c068437c2e96a47768aa9fe4bb3cbef216acb4e06ce2b7e0327

Active Calendar 1.2.0 Cross Site Scripting

Change Mirror Download
XSS Vulnerability in Active Calendar 1.2.0

Discovered by Martin Barbella <martybarbella@gmail.com>

Description of Vulnerability:
-----------------------------
Active Calendar is PHP Class, that generates calendars (year, month or
week view) as a HTML Table (XHTML-Valid). (From:
http://micronetwork.de/activecalendar/index.php)

In the functions enableYearNav, enableMonthNav, enableDayLinks, and
enableDatePicker of the activeCalendar class, certain variables are
assigned the value of $_SERVER['PHP_SELF'] when either no value is
specified for $link, or the value of $link is false. The values of
these variables are not sanitized later, resulting in several cross
site scripting vulnerabilities.

Systems affected:
-----------------
This has been confirmed in version 1.2.0 of Active Calendar. Previous
versions may also be affected.

Impact:
-------
When a user is tricked into clicking on a malicious link or submitting
a specially crafted form, the injected code travels to the vulnerable
web server, which reflects the attack back to the user's browser. The
browser then executes the code because it came from a "trusted"
server. (From OWASP:
http://www.owasp.org/index.php/Cross-site_Scripting_%28XSS%29)

Mitigating factors:
-------------------
The vulnerabilities will only affect applications which call the four
functions above with the default values, or applications which call
the above functions with false passed as the value of the $link
parameter.

Proof of concept:
-----------------
The code segment shows a basic example of how Active Calendar could be
used with a call to one of the four vulnerable functions.

<?php
require_once("activecalendar.php");
$cal = new activeCalendar();
$cal->enableDayLinks();
?>
<?php print "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"; ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>Active Calendar XSS Example</title>
</head>
<body>
<center>
<?php print $cal->showYear(); ?>
</center>
</body>
</html>

If this script was located at http://site/test.php, the vulnerability
could be demonstrated by viewing
http://site/test.php/"><script>document.body.innerHTML='XSS';</script>.

Workaround:
-----------
When using the activeCalendar class, explicitly pass a sanitized value
for the $link parameter when calling the functions enableYearNav,
enableMonthNav, enableDayLinks, and enableDatePicker.
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close