Citrix EPA ActiveX控件多个端点验证漏洞

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漏洞ID 1189689 漏洞类型 设计错误
发布时间 2007-07-19 更新时间 2007-07-23
CVE编号 CVE-2007-3679 CNNVD-ID CNNVD-200707-451
漏洞平台 N/A CVSS评分 4.3
|漏洞来源
https://www.securityfocus.com/bid/24865
https://cxsecurity.com/issue/WLB-2007070071
http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-200707-451
|漏洞详情
CitrixAccessGateway一款通用的SSLVPN设备,为信息资源提供了安全且始终在线的单点接入支持。CitrixAccessGateway的Net6Helper.DLL、npCtxCAO.dll客户端组件中存在多个端点验证错误,如果用户受骗访问了嵌有恶意端点检查控件的网页,就可能导致下载并执行任意代码。
|漏洞EXP
-----BEGIN PGP SIGNED MESSAGE-----
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Symantec Vulnerability Research
                     http://www.symantec.com/research
                           Security Advisory

Advisory ID: SYMSA-2007-006
Advisory Title: Citrix EPA ActiveX Control Design Flaw
        Author: Michael White / michael_white (at) symantec (dot) com [email concealed]
  Release Date: 19-07-2007
   Application: Citrix Access Gateway
      Platform: Internet Explorer/Win32
      Severity: Remote arbitrary code execution
 Vendor status: Patch available
    CVE Number: CVE-2007-3679
     Reference: http://www.securityfocus.com/bid/24865

Overview:

Citrix Access Gateway offers a clientless SSL VPN solution
implemented through a series of browser-based controls. As part of
the endpoint validation, the ActiveX control for Internet Explorer
downloads and executes a series of executable modules from the
remote server.

Details:

Researchers identified that the endpoint checking control can be
embedded in any web page and subverted to download and execute any
executable module of the attacker?s choosing.

This vulnerability represents a design flaw in the architecture of
the endpoint validation practice.

A high level of browser trust is required to allow the endpoint
checks to function correctly, and the control is signed by Citrix
Corporation.

Vendor Response:

This has been addressed by a product update.
See http://support.citrix.com/article/CTX113815

Recommendation:

Apply the product update as detailed in 
http://support.citrix.com/article/CTX113815

Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has assigned
the following names to these issues.  These are candidates for
inclusion in the CVE list (http://cve.mitre.org), which standardizes
names for security problems.

CVE-2007-3679

- -------Symantec Vulnerability Research Advisory Information-------

For questions about this advisory, or to report an error:
research (at) symantec (dot) com [email concealed]

For details on Symantec's Vulnerability Reporting Policy:
http://www.symantec.com/research/Symantec-Responsible-Disclosure.pdf

Symantec Vulnerability Research Advisory Archive:
http://www.symantec.com/research/

Symantec Vulnerability Research GPG Key:
http://www.symantec.com/research/Symantec_Vulnerability_Research_GPG.asc

- -------------Symantec Product Advisory Information-------------

To Report a Security Vulnerability in a Symantec Product:
secure (at) symantec (dot) com [email concealed]

For general information on Symantec's Product Vulnerability
reporting and response:
http://www.symantec.com/security/

Symantec Product Advisory Archive:
http://www.symantec.com/avcenter/security/SymantecAdvisories.html

Symantec Product Advisory PGP Key:
http://www.symantec.com/security/Symantec-Vulnerability-Management-Key.a
sc

- ---------------------------------------------------------------

Copyright (c) 2007 by Symantec Corp.
Permission to redistribute this alert electronically is granted
as long as it is not edited in any way unless authorized by
Symantec Consulting Services. Reprinting the whole or part of
this alert in any medium other than electronically requires
permission from research (at) symantec (dot) com. [email concealed]

Disclaimer
The information in the advisory is believed to be accurate at the
time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS
condition. There are no warranties with regard to this information.
Neither the author nor the publisher accepts any liability for any
direct, indirect, or consequential loss or damage arising from use
of, or reliance on, this information.

Symantec, Symantec products, and Symantec Consulting Services are
registered trademarks of Symantec Corp. and/or affiliated companies
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|受影响的产品
Citrix Access Gateway Standard Edition 4.5 Citrix Access Gateway Advanced Edition 4.5 Citrix Access Gateway AAC 4.0 Citrix Access Gateway AAC 4.2 Citrix Access Gateway 0
|参考资料

来源:BID
名称:24975
链接:http://www.securityfocus.com/bid/24975
来源:VUPEN
名称:ADV-2007-2583
链接:http://www.frsirt.com/english/advisories/2007/2583
来源:support.citrix.com
链接:http://support.citrix.com/article/CTX114028
来源:support.citrix.com
链接:http://support.citrix.com/article/CTX113815
来源:SECUNIA
名称:26143
链接:http://secunia.com/advisories/26143
来源:MISC
链接:http://www.symantec.com/content/en/us/enterprise/research/SYMSA-2007-006.txt
来源:BID
名称:24865
链接:http://www.securityfocus.com/bid/24865
来源:BUGTRAQ
名称:20070718SYMSA-2007-006:CitrixEPAActiveXControlDesignFlaw
链接:http://www.securityfocus.com/archive/1/archive/1/474204/100/0/threaded
来源:OSVDB
名称:37845
链接:http://osvdb.org/37845
来源:XF
名称:citrix-access-activex-plugin-code-execution(35511)
链接:http://xforce.iss.net/xforce/xfdb/35511
来源:SREASON
名称:2916
链接:http://securityreason.com/securityalert/2916