Citrix Access Gateway Standard and Advanced Edition multiple ActiveX control code execution
| citrix-access-activex-plugin-code-execution (35511) |  High Risk |
Description:
Citrix Access Gateway Standard and Advanced Edition could allow a remote attacker to execute arbitrary code on the system, caused by design errors in the Net6Launcher (Net6Helper.DLL) ActiveX control, CCAOControl (npCtxCAO.dll) ActiveX control, and Citrix Endpoint Analysis Client (npCtxCAO.dll) Firefox plugin. An attacker could exploit this vulnerability to execute arbitrary code on the system with the victim's privileges, if the attacker could persuade a victim to visit a malicious Web site.
Platforms Affected:
- Citrix, Access Gateway 4.5 Advanced
- Citrix, Access Gateway 4.5 Standard
- Citrix, Advanced Access Control 4.0
- Citrix, Advanced Access Control 4.2
- Microsoft, Windows Vista
Remedy:
Refer to CTX113815 and CTX114028 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Wed Jul 18 2007 - 13:58:02 CDT, SYMSA-2007-006: Citrix EPA ActiveX Control Design Flaw at http://archives.neohapsis.com/archives/bugtraq/2007-07/0211.html.
- CTX113815, Vulnerabilities in Access Gateway Standard and Advanced Editions clients could result in arbitrary code execution at http://support.citrix.com/article/CTX113815.
- CTX114028, Hotfix AG2000_v455 - Access Gateway Standard Edition 4.5 at http://support.citrix.com/article/CTX114028.
- SYMSA-2007-006, Citrix EPA ActiveX Control Design Flaw at http://www.symantec.com/content/en/us/enterprise/research/SYMSA-2007-006.txt.
- BID-24865: Citrix EPA ActiveX Control Design Flaw
- BID-24975: Citrix Access Gateway Standard and Advanced Edition Multiple Remote Vulnerabilities
- CVE-2007-3679: The Citrix EPA ActiveX control (aka the endpoint checking control or CCAOControl Object) before 4.5.0.0 in npCtxCAO.dll in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced Edition before 4.5 HF1 allows remote attackers to download and execute arbitrary programs onto a client system.
- CVE-2007-4013: Multiple unspecified vulnerabilities in (1) Net6Helper.DLL (aka Net6Launcher Class) 4.5.2 and earlier, (2) npCtxCAO.dll (aka Citrix Endpoint Analysis Client) in a Firefox plugin directory, and (3) a second npCtxCAO.dll (aka CCAOControl Object) before 4.5.0.0 in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced Edition before 4.5 HF1 have unknown impact and attack vectors, possibly related to buffer overflows. NOTE: vector 3 might overlap CVE-2007-3679.
- SA26143: Citrix Access Gateway Multiple Vulnerabilities
- VUPEN/ADV-2007-2583: Citrix Access Gateway Multiple Remote Code Execution and Security Bypass Issues
Reported:
Jul 19, 2007
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