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[SA33773] IBM AIX "rmsock" and "rmsock64" Log File Privilege Escalation

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri Jan 30 2009 - 13:24:04 CST

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TITLE:
IBM AIX "rmsock" and "rmsock64" Log File Privilege Escalation

SECUNIA ADVISORY ID:
SA33773

VERIFY ADVISORY:
http://secunia.com/advisories/33773/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

OPERATING SYSTEM:
AIX 6.x
http://secunia.com/advisories/product/16995/
AIX 5.x
http://secunia.com/advisories/product/213/

DESCRIPTION:
IBM has acknowledged a security issue in IBM AIX, which can be
exploited by malicious, local users to perform certain actions with
escalated privileges.

The security issue is caused due to the "rmsock" and "rmsock64"
commands creating log files in an insecure manner. This can be
exploited to e.g. append data to arbitrary files.

The security issue is reported in the AIX platforms 5.2, 5.3, and
6.1. Other versions may also be affected.

SOLUTION:
Apply fix or APARs.

-- Fix --

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

-- APARs --

AIX 5.2.0:
http://www.ibm.com/support/docview.wss?uid=isg1IZ40386

AIX 5.3.0:
http://www.ibm.com/support/docview.wss?uid=isg1IZ42785

AIX 5.3.7:
http://www.ibm.com/support/docview.wss?uid=isg1IZ42786

AIX 5.3.8:
http://www.ibm.com/support/docview.wss?uid=isg1IZ42787

AIX 5.3.9:
http://www.ibm.com/support/docview.wss?uid=isg1IZ42788

AIX 6.1.0:
http://www.ibm.com/support/docview.wss?uid=isg1IZ41599

AIX 6.1.1:
http://www.ibm.com/support/docview.wss?uid=isg1IZ41593

AIX 6.1.2:
http://www.ibm.com/support/docview.wss?uid=isg1IZ41510

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

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