Title: Tugux CMS 1.2 (pid) Remote Arbitrary File Deletion Vulnerability
Advisory ID: ZSL-2011-5024
Type: Local/Remote
Impact: Manipulation of Data
Risk: (3/5)
Release Date: 10.07.2011

Summary

Tugux CMS is a free, open-source content Management system (CMS) and application that powers the entire web.

Description

Input passed to the 'pid' parameter in administrator/delete_page_parse.php is not properly sanitised before being used to delete files. This can be exploited to delete files with the permissions of the web server via directory traversal sequences passed within the 'pid' parameter.

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/administrator/delete_page_parse.php
----------------
1: <?php
2: ///post form data
3: $id=$_POST['pid'];
4:
5: $pic1 = ("slides/$id/image_01.jpg");
6: if (file_exists($pic1)) {
7: unlink($pic1);
8: }
9: $dir = "slides/$id";
10: rmdir($dir);
11:
12: include_once "../scripts/connect_to_mysql.php";
13: $query = mysqli_query($myConnection, "DELETE FROM pages WHERE id='$id' ") or die (mysqli_error($myConnection));
14: echo '<table align="center"><tr> <td><div style=" width:300px; margin:auto; border:1px solid #BBB; font-family:Arial, Helvetica, sans-serif; color:#666; text-align:center">
15: <img src="images/check.png" width="90" height="87"><br />
16: Operation completed.Your page has been DELETED.<br />
17: <a href="index.php">Click Here to go back</a></div></td></tr></table>';
18: exit();
19: ?>

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Vendor

Tugux Studios - http://www.tugux.com

Affected Version

1.2

Tested On

Microsoft Windows XP Professional SP3 (EN)
Apache 2.2.14 (Win32)
PHP 5.3.1
MySQL 5.1.41

Vendor Status

N/A

PoC

tugux_delete.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] http://www.exploit-db.com/exploits/17518/
[2] http://securityreason.com/exploitalert/10604
[3] http://packetstormsecurity.org/files/102946
[4] http://www.securityfocus.com/bid/48631
[5] http://xforce.iss.net/xforce/xfdb/68495
[6] http://secunia.com/advisories/44663

Changelog

[10.07.2011] - Initial release
[11.07.2011] - Added reference [2], [3] and [4]
[12.07.2011] - Added reference [5]
[20.07.2011] - Added reference [6]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk