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AUSCERT External Security Bulletin Redistribution
ESB-2007.0223 -- [AIX]
IBM AIX Network Authentication Service advisory
5 April 2007
AusCERT Security Bulletin Summary
Product: Network Authentication Service 1.3 and 1.4
Operating System: AIX 5.3
Impact: Execute Arbitrary Code/Commands
CVE Names: CVE-2007-1216 CVE-2007-0957 CVE-2007-0956
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IBM SECURITY ADVISORY
First Issued: Tue Apr 3 13:39:48 CDT 2007
VULNERABILITY: A double free vulnerability may allow an attacker to
execute arbitrary code.
PLATFORMS: Network Authentication Service 1.3 and 1.4
for AIX 5.2 and AIX 5.3.
SOLUTION: Apply the fixes described below.
THREAT: A remote attacker may execute arbitrary code on the
host running kadmind
CERT VU Number: VU#419344
CVE Number: CVE-2007-1216
The MIT Kerberos team recently reported various vulnerabilities in Kerberos
version 5. Kerberos is available for AIX via Network Authentication Service
on the Expansion Pack. Network Authentication Service for AIX is not
affected by MITKRB5-SA-2007-001 (CVE-2007-0956, VU#220816) or
MITKRB5-SA-2007-002 (CVE-2007-0957, VU#704024).
MITKRB5-SA-2007-003 (CVE-2007-1216,VU#419344) may allow an attacker to
execute arbitrary code on the host running kadmind. kamind runs as root so
the attacker could execute arbitrary code with root privileges. More
information about security vulnerabilities in MIT kerberos can be found at
The following versions of Network Authentication Service are vulnerable:
* Network Authentication Service 18.104.22.168 through 22.214.171.124
* Network Authentication Service 126.96.36.199 through 188.8.131.52
To determine which version of Network Authentication Service is installed,
execute the following commands:
# lslpp -L krb5.client.rte
# lslpp -L krb5.server.rte
If the filesets are installed they will be listed along with version
information, state, type and a description. The first command prints
information for the client fileset and the second command prints
information for the server fileset. Affected hosts should upgrade all
affected Network Authentication Service filesets that are installed.
A remote attacker may cause execute arbitrary code on a host running
IBM provides the following fixes:
AIX 5.2.0: Install Network Authentication Service version 184.108.40.206 or
220.127.116.11. Customers may contact AIX Support to request either
AIX 5.3.0: Install Network Authentication Service version
18.104.22.168 or 22.214.171.124. Customers may contact AIX Support to request
either versions. Version 126.96.36.199 will also available on the AIX 5L
for POWER V5.3 Expansion Pack available in November 2007. (form
IV. Contact Information
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Please contact your local IBM AIX support center for any assistance.
eServer is a trademark of International Business Machines Corporation.
IBM, AIX and pSeries are registered trademarks of International Business
Machines Corporation. All other trademarks are property of their
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