ID

VAR-200707-0192

CVE

CVE-2007-4016

TITLE

Citrix Access Gateway Standard Edition and Advanced Edition Arbitrary client component vulnerable to arbitrary code execution

DESCRIPTION

Unspecified vulnerability in the client components in Citrix Access Gateway Standard Edition before 4.5.5 and Advanced Edition before 4.5 HF1 allows attackers to execute arbitrary code via unspecified vectors. Exploiting these issues could allow an attacker to: - Obtain sensitive information - Execute code remotely - Hijack sessions - Redirect users to arbitrary sites - Make unauthorized configuration changes Citrix has released patches for these vulnerabilities. Citrix Access Gateway, a general-purpose SSL VPN device, provides secure and always-on single-point access support for information resources. ---------------------------------------------------------------------- Try a new way to discover vulnerabilities that ALREADY EXIST in your IT infrastructure. The Full Featured Secunia Network Software Inspector (NSI) is now available: http://secunia.com/network_software_inspector/ The Secunia NSI enables you to INSPECT, DISCOVER, and DOCUMENT vulnerabilities in more than 4,000 different Windows applications. 1) A security issue due to residual information left on the client device can be exploited to gain unauthorized access to a user\x92s active session. 3) The web-based administration console of an Access Gateway appliance allows administrator to perform certain actions via HTTP requests without performing any validity checks to verify the request. This can be exploited to e.g. change certain configuration settings, by enticing a logged-in administrator to visit a malicious web site. This vulnerability is reported in Access Gateway model 2000 appliances with firmware version 4.5.2 and prior. A redirection issue that may facilitate phishing attacks has also been reported. SOLUTION: Apply hotfix and update firmware to version 4.5.5. Access Gateway Standard Edition 4.5: http://support.citrix.com/article/CTX114028 Access Gateway Advanced Edition 4.5: http://support.citrix.com/article/CTX112803 The vendor also recommends to remove the following components from client devices: VPN ActiveX components: * Net6Helper.DLL (Friendly name: Net6Launcher Class, version number up to and including 4.5.2) EPA Components (ActiveX): * npCtxCAO.dll (Friendly name: CCAOControl Object, version number up to 4,5,0,0) EPA Components (Firefox plugin): * npCtxCAO.dll (Friendly name: Citrix Endpoint Analysis Client, present in two locations) PROVIDED AND/OR DISCOVERED BY: 1) The vendor credits Martin O\x92Neal, Corsaire. 2) The vendor credits Michael White, Symantec. 3) The vendor credits Paul Johnston. ORIGINAL ADVISORY: http://support.citrix.com/article/CTX113814 http://support.citrix.com/article/CTX113815 http://support.citrix.com/article/CTX113816 http://support.citrix.com/article/CTX113817 ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ----------------------------------------------------------------------

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

lack of information

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Martin O'NealPaul Johnston

SOURCES

LAST UPDATE DATE

2025-04-10T23:13:15.799000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE