pconsole_advisory.asc: Version 3 Version 3 Issued: Tue Oct 25 14:55:49 CDT 2016 Version 3 Changes: Changed the impacted upper level filesets to match those in the iFixes. Clarified that at least one of sysmgt.pconsole.rte or sysmgt.websm.rte must be present in order to be impacted by this vulnerability. IBM SECURITY ADVISORY First Issued: Thu Sep 22 16:13:43 CDT 2016 |Updated: Tue Oct 25 14:55:49 CDT 2016 |Update: Changed the impacted upper level filesets to match those | in the iFixes. Clarified that at least one of sysmgt.pconsole.rte | or sysmgt.websm.rte must be present in order to be impacted by | this vulnerability. The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/pconsole_advisory.asc https://aix.software.ibm.com/aix/efixes/security/pconsole_advisory.asc ftp://aix.software.ibm.com/aix/efixes/security/pconsole_advisory.asc |This replaces pconsole_mitigation.asc. Security Bulletin: Vulnerability in Tivoli LWI impacts pConsole and WebSM for AIX (CVE-2016-6038) =============================================================================== SUMMARY: A directory traversal vulnerability in the Eclipse Help component shipped by the Tivoli Lightweight Infrastructure (LWI) allows remote attackers to read arbitrary files via a crafted URL. This vulnerability affects IBM System Director Console for AIX (pConsole) and Web Based System Management Remote Client (WebSM Remote). =============================================================================== VULNERABILITY DETAILS: CVEID: CVE-2016-6038 DESCRIPTION: A directory traversal vulnerability in the Eclipse Help component shipped by Tivoli Lightweight Infrastructure (LWI) allows remote attackers to read arbitrary files via a crafted URL. This vulnerability affects IBM System Director Console for AIX (pconsole) and Web Based System Management Remote Client (WebSM Remote). CVSS Base Score: 6.5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117019 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) AFFECTED PRODUCTS AND VERSIONS: AIX 5.3, 6.1, 7.1 Some AIX releases are potentially vulnerable if an impacted LWI version is present on the system. | 1. If one or both of the following filesets are installed, then LWI | version will need to be verified: sysmgt.pconsole.rte sysmgt.websm.rte | If neither sysmgt.pconsole.rte nor sysmgt.websm.rte are installed, | then the system is not impacted by this vulnerability. Note: to find out whether the affected filesets are installed on your systems, refer to the lslpp command found in AIX user's guide. Example: lslpp -L | grep -i sysmgt.pconsole.rte 2. Verify LWI version. The following LWI versions are vulnerable: Fileset Lower Level Upper Level --------------------------------------- lwi.runtime 5.3.12.1 5.3.12.1 | lwi.runtime 6.1.9.0 6.1.9.99 | lwi.runtime 7.1.3.0 7.1.3.100 Note: to find out whether the affected filesets are installed on your systems, refer to the lslpp command found in AIX user's guide. Example: lslpp -L | grep -i lwi.runtime VIOS 2.2.3.5x VIOS 2.2.3.5x and older releases are vulnerable due to an impacted LWI version included in the fileset sysmgt.websm.rte. Note: VIOS 2.2.3.60, 2.2.4.0 and newer releases are not vulnerable. REMEDIATION: A. APARS IBM has assigned the following APARs to this problem: AIX Level APAR Availability SP KEY ------------------------------------------------ 5.3.12 IV89386 N/A N/A key_w_apar 6.1.9 IV89418 NOW SP6 key_w_apar 7.1.3 IV89385 1/27/17 SP8 key_w_apar VIOS Level APAR Availability Release KEY ------------------------------------------------- 2.2.4 IV89418 NOW 2.2.4.0 key_w_apar Subscribe to the APARs here: http://www.ibm.com/support/docview.wss?uid=isg1IV89386 http://www.ibm.com/support/docview.wss?uid=isg1IV89418 http://www.ibm.com/support/docview.wss?uid=isg1IV89385 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_fix.tar http://aix.software.ibm.com/aix/efixes/security/pconsole_fix.tar https://aix.software.ibm.com/aix/efixes/security/pconsole_fix.tar The link above is 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 ---------------------------------------------- 5.3.12.9 IV89386s9c.160923.epkg.Z key_w_fix 6.1.9.5 IV89418s5a.160927.epkg.Z key_w_fix 7.1.3.5 IV89385s7a.160927.epkg.Z key_w_fix 7.1.3.6 IV89385s7a.160927.epkg.Z key_w_fix 7.1.3.7 IV89385s7a.160927.epkg.Z key_w_fix To extract the fixes from the tar file: tar xvf pconsole_fix.tar cd pconsole_fix Verify you have retrieved the fixes intact: The checksums below were generated using the "openssl dgst -sha256 file" command as the following: openssl dgst -sha256 filename KEY ----------------------------------------------------------------------------------------------------- e4eb27e63211cd8ae69b38b7fbd9c81ed7a90a41f4cc5940bfe1a33f45a93ee8 IV89385s7a.160927.epkg.Z key_w_csum fe18aa98b59f80b74760671aef16006be7490dea19ff116ea04df6890af261d7 IV89386s9c.160927.epkg.Z key_w_csum c8bc7a55a9c4b8e8f125fe050296c9a480c5ec81efde2f71556d75811ccbbb8f IV89418s5a.160927.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_advisory.asc.sig https://aix.software.ibm.com/aix/efixes/security/pconsole_advisory.asc.sig ftp://aix.software.ibm.com/aix/efixes/security/pconsole_advisory.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 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: Current mitigation is to disable IBM System Director Console (pConsole) for AIX 6.1 and 7.1 and disable Web Based System Manager (WebSM) Remote Client for AIX 5.3 and 6.1: 1. Stop the services: AIX 6.1 and 7.1: # stopsrc -s pconsole AIX 5.3 and 6.1: # stopsrc -s http4websm 2. Verify the services are inoperative: AIX 6.1 and 7.1: # lssrc -s pconsole AIX 5.3 and 6.1: # lssrc -s http4websm 3. If system is restarted, please follow steps 1. and 2. again. SMIT may be used as an alternative for system administration. =============================================================================== 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 To view previously issued advisories, please visit: http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq Comments regarding the content of this announcement can be directed to: security-alert@austin.ibm.com 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 To obtain the PGP public key that can be used to communicate securely with the AIX Security Team via security-alert@austin.ibm.com you can either: A. Download the key from our web page: http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgppubkey.txt B. Download the key from a PGP Public Key Server. The key ID is: 0x28BFAA12 Please contact your local IBM AIX support center for any assistance. REFERENCES: Complete CVSS v3 Guide: http://www.first.org/cvss/user-guide On-line Calculator v3: http://www.first.org/cvss/calculator/3.0 ACKNOWLEDGEMENTS: None. CHANGE HISTORY: First Issued: Thu Sep 22 16:13:43 CDT 2016 Updated: Fri Sep 30 14:51:49 CDT 2016 Update: iFixes added for the latest, impacted, supported AIX TLs. | Updated: Tue Oct 25 14:55:49 CDT 2016 | Update: Changed the impacted upper level filesets to match those | in the iFixes. Clarified that at least one of sysmgt.pconsole.rte | or sysmgt.websm.rte must be present in order to be impacted by | this vulnerability. =============================================================================== *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.