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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== 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 Publisher: IBM Operating System: AIX 5.3 AIX 5.2 Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CVE-2007-1216 CVE-2007-0957 CVE-2007-0956 Ref: AL-2007.0040 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 IBM SECURITY ADVISORY First Issued: Tue Apr 3 13:39:48 CDT 2007 =========================================================================== VULNERABILITY SUMMARY 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 =========================================================================== DETAILED INFORMATION I. Description =============== 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 http://web.mit.edu/kerberos/advisories/. The following versions of Network Authentication Service are vulnerable: * Network Authentication Service 1.3.0.0 through 1.3.0.5 * Network Authentication Service 1.4.0.0 through 1.4.0.5 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. II. Impact ========== A remote attacker may cause execute arbitrary code on a host running kadmind. III. Solutions =============== A. Fix IBM provides the following fixes: AIX 5.2.0: Install Network Authentication Service version 1.4.0.6 or 1.3.0.6. Customers may contact AIX Support to request either versions. AIX 5.3.0: Install Network Authentication Service version 1.3.0.6 or 1.4.0.6. Customers may contact AIX Support to request either versions. Version 1.4.0.6 will also available on the AIX 5L for POWER V5.3 Expansion Pack available in November 2007. (form number LCD4-7460-08). IV. Contact Information ======================== If you would like to receive AIX Security Advisories via email, please visit: https://techsupport.services.ibm.com/server/pseries.subscriptionSvcs Comments regarding the content of this announcement can be directed to: security-alert@austin.ibm.com To request the PGP public key that can be used to communicate securely with the AIX Security Team send email to security-alert@austin.ibm.com with a subject of "get key". The key can also be downloaded from a PGP Public Key Server. The key id is 0x3AE561C3. 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 respective holders. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGEqcoofN/JhsU8pkRAluTAJ9J0smH2t6XqiWxBleXFl2JyHs8gwCeLIkH /kSu7212zFcPS3gydTCQTwo= =6m3V - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRhRBhyh9+71yA2DNAQIr5AP+JRQxqcow9IlTi/cZGkf0KWVIx7V9Tr+M GOM+uqjCgoIizEuERLVseh4P3W98Fe/RtWHFoK2BwCdH1FzlJ2vEUNI+IojnCQiI bggUcRfaMU+aaSimHbzxJkyfa1wnYtDfdrGvmJIudkHAWJKf45H9m4g3os134vgl rfQWaM1tLFc= =noW1 -----END PGP SIGNATURE-----