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Category:   Application (Database)  >   Informix Vendors:   IBM
Informix Dynamic Server Uses Unsafe Installation Scripts and Directory Permissions That May Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1017156
SecurityTracker URL:
CVE Reference:   CVE-2006-5663, CVE-2006-5664   (Links to External Site)
Date:  Nov 3 2006
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 10.0
Description:   Two vulnerabilities were reported in Informix. A local user can obtain elevated privileges on the target system.

The installation scripts are installed with insecure permissions [CVE-2006-5663]. A local user can modify the scripts to gain elevated privileges.

The installation process creates temporary files in the /tmp directory in an unsafe manner [CVE-2006-5664]. A local user can create a symbolic link (symlink) from a critical file on the target system to one of the temporary files. Then, when the installation scripts are run by a target user, the symlinked file may be created or overwritten with the privileges of the target user.

The Informix Dynamic Server, Informix Client Software Development Kit (CSDK), and Informix I-Connect components are affected.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued the following APARs:

IBM Informix Dynamic Server installserver script: IC50785
IBM Informix Dynamic Server (Bundle) ids_install script: IC50784
IBM Informix CSDK installclientsdk script: IC50783
IBM Informix Connect installconn script: IC50786

The vendor plans to issue the following fixed versions.

IBM Informix Dynamic Server for Solaris Opteron, Linux zSeries:


IBM Informix Dynamic Server for all others:


IBM Informix CSDK for Solaris Opteron, Linux zSeries:


IBM Informix CSDK for all others:


IBM Informix Connect for Solaris Opteron, Linux zSeries:


IBM Informix Connect for all others:


The IBM advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (SGI/IRIX), UNIX (Solaris - SunOS)

Message History:   None.

 Source Message Contents

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