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Category:   OS (UNIX)  >   IBM AIX Vendors:   IBM
AIX rmsock Command Lets Local Users Append to Arbitrary Files and Gain Elevated Privileges
SecurityTracker Alert ID:  1021650
SecurityTracker URL:  http://securitytracker.com/id/1021650
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jan 30 2009
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): 5.2, 5.3, 6.1
Description:   A vulnerability was reported in IBM AIX. A local user can obtain elevated privileges on the target system.

The rmsock and rmsock64 commands create log files in an unsafe manner. A local user can exploit this to append data to arbitrary files on the target system.

The following files are affected:

/usr/sbin/rmsock
/usr/sbin/rmsock64

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

5.2.0 IZ40386
5.3.0 IZ42785 To be available 4/29/2009
5.3.7 IZ42786 To be available 4/29/2009
5.3.8 IZ42787 To be available 4/29/2009
5.3.9 IZ42788 To be available 4/29/2009
6.1.0 IZ41599 To be available 2/25/2009
6.1.1 IZ41593 To be available 2/25/2009
6.1.2 IZ41510 To be available 2/25/2009

Fixes are also available at:

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

The vendor's advisory is available at:

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

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

Message History:   None.


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