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Category:   OS (UNIX)  >   IBM AIX Vendors:   IBM
IBM AIX 'at' Command Lets Local Users View Arbitrary Files
SecurityTracker Alert ID:  1021704
SecurityTracker URL:  http://securitytracker.com/id/1021704
CVE Reference:   CVE-2009-0536   (Links to External Site)
Updated:  Feb 20 2009
Original Entry Date:  Feb 11 2009
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.2, 5.3, 6.1
Description:   A vulnerability was reported in IBM AIX. A local user can view arbitrary files on the target system.

A local user can exploit a flaw in the set user id (setuid) root '/usr/bin/at' command to view arbitrary files on the target system.

iDefense Labs reported this vulnerability.

Impact:   A local user can view arbitrary files on the target system.
Solution:   The vendor has issued the following APARs (with availability dates listed).

5.2.0 IZ43452 7/22/2009
5.3.0 IZ43453 4/29/2009
5.3.7 IZ43454 4/29/2009
5.3.8 IZ43455 4/29/2009
5.3.9 IZ43456 4/29/2009
6.1.0 IZ43457 6/03/2009
6.1.1 IZ43458 6/03/2009
6.1.2 IZ43459 6/03/2009

Fixes are available at:

http://aix.software.ibm.com/aix/efixes/security/at_fix.tar
ftp://aix.software.ibm.com/aix/efixes/security/at_fix.tar

The vendor's advisory is available at:

http://aix.software.ibm.com/aix/efixes/security/at_advisory.asc

Vendor URL:  aix.software.ibm.com/aix/efixes/security/at_advisory.asc (Links to External Site)
Cause:   Access control error

Message History:   None.


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