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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/

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