IBM SECURITY ADVISORY First Issued: Fri Dec 2 15:01:37 CST 2016 |Updated: Mon May 1 16:30:43 CDT 2017 |Update: Bulletin updated to include ifix for AIX level 7.1.3 The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/pconsole_advisory2.asc https://aix.software.ibm.com/aix/efixes/security/pconsole_advisory2.asc ftp://aix.software.ibm.com/aix/efixes/security/pconsole_advisory2.asc Security Bulletin: Vulnerability in pConsole impacts AIX (CVE-2016-0266) =============================================================================== SUMMARY: pConsole on AIX does not support TLS 1.2. =============================================================================== VULNERABILITY DETAILS: CVEID: CVE-2016-0266 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0266 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0266 DESCRIPTION: IBM AIX 5.3, 6.1, 7.1, and 7.2 and VIOS 2.2.x do not default to the latest TLS version, which makes it easier for man-in-the-middle attackers to obtain sensitive information via unspecified vectors. CVSS Base Score: 3.7 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/110911 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N) AFFECTED PRODUCTS AND VERSIONS: AIX 6.1, 7.1 The following fileset levels are vulnerable: key_fileset = aix Fileset Lower Level Upper Level KEY --------------------------------------------------------- sysmgt.pconsole.rte 6.1.9.0 6.1.9.100 key_w_fs | sysmgt.pconsole.rte 7.1.3.0 7.1.3.99 key_w_fs sysmgt.pconsole.rte 7.1.4.0 7.1.4.0 key_w_fs Note: To find out whether the affected filesets are installed on your systems, refer to the lslpp command found in the AIX user's guide. Example: lslpp -L | grep -i sysmgt.pconsole.rte REMEDIATION: A. APARS IBM has assigned the following APARs to this problem: AIX Level APAR Availability SP KEY ------------------------------------------------ 6.1.9 IV89739 11/11/16 SP8 key_w_apar | 7.1.3 IV93624 N/A N/A key_w_apar 7.1.4 IV89737 11/11/16 SP3 key_w_apar Note: AIX 6.1.9.5 and below are impacted, but iFixes are not available. Recommended remediation for AIX 6.1.9.5 and below is to upgrade to a fixed TL/SP. Subscribe to the APARs here: https://www.ibm.com/support/docview.wss?uid=isg1IV89739 https://www.ibm.com/support/docview.wss?uid=isg1IV93624 https://www.ibm.com/support/docview.wss?uid=isg1IV89737 By subscribing, you will receive periodic email alerting you to the status of the APAR, and a link to download the fix once it becomes available. B. FIXES Fixes are available. The fixes can be downloaded via ftp or http from: ftp://aix.software.ibm.com/aix/efixes/security/pconsole_fix2.tar http://aix.software.ibm.com/aix/efixes/security/pconsole_fix2.tar https://aix.software.ibm.com/aix/efixes/security/pconsole_fix2.tar The links above are to a tar file containing this signed advisory, fix packages, and OpenSSL signatures for each package. The fixes below include prerequisite checking. This will enforce the correct mapping between the fixes and AIX Technology Levels. AIX Level Interim Fix (*.Z) KEY ---------------------------------------------- 6.1.9.6 IV89739s7a.161024.epkg.Z key_w_fix 6.1.9.7 IV89739s7a.161024.epkg.Z key_w_fix | 7.1.3.7 IV93624s3b.170308.epkg.Z key_w_fix | 7.1.3.8 IV93624s3b.170308.epkg.Z key_w_fix | 7.1.3.9 IV93624s3b.170308.epkg.Z key_w_fix 7.1.4.0 IV89737s2a.161024.epkg.Z key_w_fix 7.1.4.1 IV89737s2a.161024.epkg.Z key_w_fix 7.1.4.2 IV89737s2a.161024.epkg.Z key_w_fix Please note that the above table refers to AIX TL/SP level as opposed to fileset level, i.e., 7.1.4.1 is AIX 7100-04-01. To extract the fixes from the tar file: tar xvf pconsole_fix2.tar cd pconsole_fix2 Verify you have retrieved the fixes intact: The checksums below were generated using the "openssl dgst -sha256 " command as the following: openssl dgst -sha256 filename KEY ----------------------------------------------------------------------------------------------------- f27d8c51a81b87512253fd3600e6a11a4b4fd084f8d7db2bfd2102e199f0c19b IV89737s2a.161024.epkg.Z key_w_csum | 0db6c9f3b964b5f43bf6d1c6b654b96f817a2753b4432e39c303d342d829a7a0 IV93624s3b.170308.epkg.Z key_w_csum 9ada0e539df3e862b9f82d2d67dd3ab78be4a15d6c78dfec5f3d2e5a5a1c78c0 IV89739s7a.161024.epkg.Z key_w_csum These sums should match exactly. The OpenSSL signatures in the tar file and on this advisory can also be used to verify the integrity of the fixes. If the sums or signatures cannot be confirmed, contact IBM AIX Security at security-alert@austin.ibm.com and describe the discrepancy. openssl dgst -sha1 -verify -signature .sig openssl dgst -sha1 -verify -signature .sig Published advisory OpenSSL signature file location: http://aix.software.ibm.com/aix/efixes/security/pconsole_advisory2.asc.sig https://aix.software.ibm.com/aix/efixes/security/pconsole_advisory2.asc.sig ftp://aix.software.ibm.com/aix/efixes/security/pconsole_advisory2.asc.sig C. FIX AND INTERIM FIX INSTALLATION IMPORTANT: If possible, it is recommended that a mksysb backup of the system be created. Verify it is both bootable and readable before proceeding. To preview a fix installation: installp -a -d fix_name -p all # where fix_name is the name of the # fix package being previewed. To install a fix package: installp -a -d fix_name -X all # where fix_name is the name of the # fix package being installed. Interim fixes have had limited functional and regression testing but not the full regression testing that takes place for Service Packs; however, IBM does fully support them. Interim fix management documentation can be found at: http://www14.software.ibm.com/webapp/set2/sas/f/aix.efixmgmt/home.html https://www14.software.ibm.com/webapp/set2/sas/f/aix.efixmgmt/home.html To preview an interim fix installation: emgr -e epkg_name -p # where epkg_name is the name of the # interim fix package being previewed. To install an interim fix package: emgr -e epkg_name -X # where epkg_name is the name of the # interim fix package being installed. WORKAROUNDS AND MITIGATIONS: None. =============================================================================== CONTACT US: Note: Keywords labeled as KEY in this document are used for parsing purposes. If you would like to receive AIX Security Advisories via email, please visit "My Notifications": http://www.ibm.com/support/mynotifications https://www.ibm.com/support/mynotifications To view previously issued advisories, please visit: http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq https://www14.software.ibm.com/webapp/set2/subscriptions/onvdq To obtain the OpenSSL public key that can be used to verify the signed advisories and ifixes: Download the key from our web page: http://www.ibm.com/systems/resources/systems_p_os_aix_security_pubkey.txt https://www.ibm.com/systems/resources/systems_p_os_aix_security_pubkey.txt Please contact your local IBM AIX support center for any assistance. REFERENCES: Complete CVSS v3 Guide: http://www.first.org/cvss/user-guide https://www.first.org/cvss/user-guide On-line Calculator v3: http://www.first.org/cvss/calculator/3.0 https://www.first.org/cvss/calculator/3.0 ACKNOWLEDGEMENTS: None. CHANGE HISTORY: First Issued: Fri Dec 2 15:01:37 CST 2016 |Updated: Mon May 1 16:30:43 CDT 2017 |Update: Bulletin updated to include ifix for AIX level 7.1.3 =============================================================================== *The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin. Disclaimer According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.