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Category:   OS (UNIX)  >   IBM AIX Vendors:   IBM
(IBM Issues Fix for AIX 5.3) IBM AIX lscfg Command May Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1015622
SecurityTracker URL:  http://securitytracker.com/id/1015622
CVE Reference:   CVE-2006-0667   (Links to External Site)
Date:  Feb 14 2006
Impact:   Modification of system information, Modification of user information, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): AIX 5.2, 5.3
Description:   A vulnerability was reported in AIX. A local user may be able to obtain elevated privileges.

The AIX 'lscfg' command creates temporary trace files in an unsafe manner. A local user can create a symbolic link (symlink) from a critical file on the system to a temporary file to be used by the lscfg command. Then, when the command is run by the target user, the symlinked file will be modified with the privileges of the target user.

This may allow the allow the user to corrupt system files or potentially obtain root privileges on the target system.

Impact:   A local user can corrupt system files and may be able to gain root privileges on the target system.
Solution:   IBM has issued the following fixes:

AIX Version APAR Number Availability Corresponding Filesets
- ------------------------------------------------------------------------------
5.2.0 IY77624 available devices.chrp.base.rte 5.2.0.85
5.3.0 IY77638 available devices.chrp.base.rte 5.3.0.40

AIX Version 5 APARs can be downloaded from:

http://www-03.ibm.com/servers/eserver/support/unixservers/aixfixes.html

Security related Interim Fixes can be downloaded from:

ftp://aix.software.ibm.com/aix/efixes/security

Vendor URL:  www-1.ibm.com/support/docview.wss?uid=isg1IY77624 (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Oct 14 2005 IBM AIX lscfg Command May Let Local Users Gain Elevated Privileges



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