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Secunia Security Advisory 42638

Secunia Security Advisory 42638
Posted Dec 25, 2010
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in Citrix Access Gateway, which can be exploited by malicious people to compromise a vulnerable system.

tags | advisory
MD5 | 6cae3ae2b809877cca4fa0ca0a3aa85d

Secunia Security Advisory 42638

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TITLE:
Citrix Access Gateway Legacy Authentication Command Injection
Vulnerability

SECUNIA ADVISORY ID:
SA42638

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42638/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42638

RELEASE DATE:
2010-12-24

DISCUSS ADVISORY:
http://secunia.com/advisories/42638/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/42638/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=42638

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in Citrix Access Gateway, which can
be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to the NT4 authentication component
when using Access Gateway Enterprise or the NTLM authentication
component when using Access Gateway Standard Edition not properly
sanitising certain input before passing it as command line argument
to the Samba "samedit" utility. This can be exploited to inject and
execute arbitrary commands as the "root" user.

The vulnerability is reported in the following products and
versions:
* Access Gateway 4.5 Advanced Edition
* Access Gateway 4.5 Standard Edition
* Access Gateway 4.6 Advanced Edition
* Access Gateway 4.6 Standard Edition
* Access Gateway 8.0 Enterprise Edition
* Access Gateway 8.1 Enterprise Edition
* Access Gateway 9.0 Enterprise Edition
* Access Gateway 9.1 Enterprise Edition
* Access Gateway 9.2 Enterprise Edition
* Access Gateway VPX 4.6

SOLUTION:
The vendor has deprecated the affected authentication methods.
Migrate to a different authentication method.

PROVIDED AND/OR DISCOVERED BY:
George D. Gal, VSR

ORIGINAL ADVISORY:
Citrix CTX127613:
http://support.citrix.com/article/CTX127613

VSR:
http://www.vsecurity.com/resources/advisory/20101221-1/

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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

About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/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.

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

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