-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 IBM SECURITY ADVISORY First Issued: Wed Sept 25 15:55:39 CDT 2013 | Updated: Wed Feb 26 12:48:22 CDT 2014 | Update: Modified APAR availability dates and corrected | some APAR SP levels. | Update: 1. Replaced ifixes to resolve a prerequisite issue. | 2. Included new AIX 5.3 ifix. | Update: Ifixes without scripts The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/cmdque_advisory.asc https://aix.software.ibm.com/aix/efixes/security/cmdque_advisory.asc ftp://aix.software.ibm.com/aix/efixes/security/cmdque_advisory.asc =============================================================================== VULNERABILITY SUMMARY VULNERABILITY: AIX printer commands vulnerability |PLATFORMS: 5.3, 6.1 and 7.1 releases SOLUTION: Apply the fix as described below. THREAT: See below CVE Numbers: CVE-2013-5419 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO =============================================================================== DETAILED INFORMATION I. DESCRIPTION Printer commands mkque and mkquedev are susceptible to buffer overflow by users belonging to the 'printq' group. These commands are owned by 'root' and SUID bit set. The group is set to 'printq'. By default, no users are belong to the 'printq'. II. CVSS CVSS Base Score: 6.9 CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/87481 for the current score CVSS Environmental Score*: Undefined CVSS String: (AV:L/AC:M/Au:N/C:C/I:C/A:C) III. PLATFORM VULNERABILITY ASSESSMENT To determine if your system is vulnerable, execute the following command: lslpp -L bos.rte.printers The following fileset levels are vulnerable: AIX Fileset Lower Level Upper Level -------------------------------------------------------- | bos.rte.printers 5.3.12.1 5.3.12.1 bos.rte.printers 6.1.7.0 6.1.7.16 bos.rte.printers 6.1.8.0 6.1.8.15 bos.rte.printers 7.1.1.0 7.1.1.16 bos.rte.printers 7.1.2.0 7.1.2.15 IV. SOLUTIONS A. APARS IBM has assigned the following APARs to this problem: AIX Level APAR number Availability | (Estimate) --------------------------------------------------- | 5.3.8 IV51388 SP9 (Q1 2014) | 6.1.7 IV47427 SP9 (Q1 2014) | 6.1.8 IV47428 SP4 (Q1 2014) | 7.1.1 IV47429 SP9 (Q1 2014) | 7.1.2 IV47430 SP4 (Q1 2014) Subscribe to the APARs here: | http://www.ibm.com/support/docview.wss?uid=isg1IV51388 http://www.ibm.com/support/docview.wss?uid=isg1IV47427 http://www.ibm.com/support/docview.wss?uid=isg1IV47428 http://www.ibm.com/support/docview.wss?uid=isg1IV47429 http://www.ibm.com/support/docview.wss?uid=isg1IV47430 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 http from: http://aix.software.ibm.com/aix/efixes/security/cmdque_ifix1.tar The link above is to a tar file containing this signed advisory, fix packages, and PGP 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) ------------------------------------------------------------------- | 5.3.12.8 IV51388s8b.140226.epkg.Z | 6.1.7.8 IV47427s8b.140226.epkg.Z | 6.1.8.3 IV47428s3a.140221.epkg.Z | 7.1.1.8 IV47429s8a.140221.epkg.Z | 7.1.2.3 IV47430s3a.140221.epkg.Z To extract the fixes from the tar file: tar xvf cmdque_fix1.tar cd cmdque_fix Verify you have retrieved the fixes intact: The checksums below were generated using the "csum -h SHA1" (sha1sum) command is the followng: csum -h SHA1 (sha1sum) filename ------------------------------------------------------------------ | b75987ce95b1bbabac2d3e346106eb5f0d833fa0 IV51388s8b.140226.epkg.Z | 3dd02e731dc5ea74ba690b7a69ee0fb016871490 IV47427s8b.140226.epkg.Z | 05ad2386fb6bb1589d31d06ef85a11e2ab901ae3 IV47428s3a.140221.epkg.Z | de849091161a45500f2a69eaa956a43b619b1dc7 IV47429s8a.140221.epkg.Z | aefb9a1e28510758b350ee7de47424f4df095233 IV47430s3a.140221.epkg.Z To verify the sum, use the text of this advisory as input to sha1sum. For example: csum -h SHA1 -i Advisory.asc sha1sum -c Advisory.asc These sums should match exactly. The PGP 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. 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 ipkg_name -p # where ipkg_name is the name of the # interim fix package being previewed. To install an interim fix package: emgr -e ipkg_name -X # where ipkg_name is the name of the # interim fix package being installed. V. WORKAROUNDS There are no workarounds. VI. CONTACT INFORMATION If you would like to receive AIX Security Advisories via email, please visit: http://www.ibm.com/systems/support and click on the "My notifications" link. 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 PGP public key that can be used to communicate securely with the AIX Security Team you can either: A. Send an email with "get key" in the subject line to: security-alert@austin.ibm.com B. Download the key from our web page: http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgpkey.txt C. 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. 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. VII. ACKNOWLEDGMENTS IBM discovered and fixed this vulnerability as part of its commitment to secure the AIX operating system. VIII. REFERENCES: Complete CVSS Guide: http://www.first.org/cvss/cvss-guide.html On-line Calculator V2: http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/78907 CVE-2012-4833: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4833 *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 Flash. Note: 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (AIX) iEYEARECAAYFAlMOOSYACgkQ4fmd+Ci/qhJPwACgkEGBG/YI9x3fdG9EgGtGIwvp EtgAnA2XqFYMsqP2Rwba/xdpHpyzQSf6 =vsjW -----END PGP SIGNATURE-----