Check Point Advisories

XDMCP dtlogin Daemon Double Free (CVE-2004-0368)

Vulnerability
Protection

Check Point Reference:	CPAI-2004-127
Date Published:	21 Dec 2009
Severity:	High
Last Updated:	Monday 21 December, 2009
Source:
Industry Reference:	CVE-2004-0368
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	XDMCP (X Display Manager Control Protocol) is a protocol that provides a uniform mechanism for an autonomous display to request login service from a remote host. The dtlogin process is the component within the Common Desktop Environment (CDE), which implements the XDMCP protocol. The Common Desktop Environment (CDE) is shipped with many enterprise UNIX platforms including Sun's solaris, Hewlett-Packard's HP-UX and Tru64, IBM's AIX, SCO OpenServer, and others. There exists a double free vulnerability within the dtlogin daemon. Exploitation of his vulnerability can lead to the injection of code which would run under the privileges of the dtlogin process (normally root). In case of a successful code injection, the behavior of the target host will depend on the intended function of the injected code.

Protection Overview

This protection will detect and block malformed XDMCP requests that attempt to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the XDMCP dtlogin Daemon Double Free protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: RDP Enforcement Violation.
Attack Information: XDMCP dtlogin daemon double free