Joomla!跨站脚本漏洞

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漏洞ID 1173018 漏洞类型 跨站脚本
发布时间 2012-05-03 更新时间 2012-05-03
CVE编号 CVE-2012-2412 CNNVD-ID CNNVD-201205-077
漏洞平台 N/A CVSS评分 N/A
|漏洞来源
https://www.securityfocus.com/bid/53381
https://cxsecurity.com/issue/WLB-2012050043
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-201205-077
|漏洞详情
Joomla!是美国OpenSourceMatters团队的一套使用PHP和MySQL开发的开源、跨平台的内容管理系统(CMS)。Joomla!中存在跨站脚本漏洞,该漏洞源于对用户提供的输入未经正确过滤。攻击者可利用该漏洞在受影响站点上下文内的不知情用户浏览器上执行任意脚本代码,盗取基于cookie的认证证书进而发起其他攻击。Joomla!2.5.4版本中存在该漏洞,其他版本也可能受到影响。
|漏洞EXP

[waraxe-2012-SA#088] - Reflected XSS in Joomla 2.5.4 admin sysinfo page
===============================================================================

Author: Janek Vind "waraxe"
Date: 03. May 2012
Location: Estonia, Tartu
Web: http://www.waraxe.us/advisory-88.html
CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2412

Description of vulnerable software:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Joomla is one of the world's most popular open source CMS (content management
system). With millions of websites running on Joomla, the software is used by
individuals, small & medium-sized businesses, and large organizations worldwide
to easily create & build a variety of websites & web-enabled applications. 


Vulnerable versions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Affected is Joomla version 2.5.4, older versions may be vulnerable as well.

###############################################################################
1. Reflected XSS in Joomla 2.5.4 admin sysinfo page
###############################################################################

CVE Information:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2012-2412 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
security problems.

Vulnerability Details:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Reason: outputting html data without proper encoding
Attack vector: user-provided User-Agent string
Preconditions:
	1. target victim must be logged in as admin
Result: XSS attack possibilities


Source code snippet from "sysinfo.php":
-----------------[ source code start ]---------------------------------
function &getInfo()
{
..
	$this->info['useragent']	= $_SERVER['HTTP_USER_AGENT'];
-----------------[ source code end ]-----------------------------------


Source code snippet from "default_system.php":
-----------------[ source code start ]---------------------------------
<td>
	<?php echo $this->info['useragent'];?>
</td>
-----------------[ source code end ]-----------------------------------

As seen above, user-provided User-Agent string is used for outputting html.
No data sanitization, which indicates Reflected XSS vulnerability issue.


Disclosure Timeline:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

20.04.2012 Developers contacted via email, no response
24.04.2012 CVE identifier request
25.04.2012 Got CVE identifier
26.04.2012 Second attempt contacting developers via email, no response
03.05.2012 Advisory published


Contact:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

come2waraxe@yahoo.com
Janek Vind "waraxe"

Waraxe forum:  http://www.waraxe.us/forums.html
Personal homepage: http://www.janekvind.com/
Random project: http://albumnow.com/
---------------------------------- [ EOF ] ------------------------------------
|受影响的产品
Joomla Joomla! 2.5.4 Joomla Joomla! 2.5.3 Joomla Joomla! 2.5.2 Joomla Joomla! 2.5.1 Joomla Joomla! 2.5
|参考资料

来源:BID
名称:53381
链接:http://www.securityfocus.com/bid/53381