-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 IBM SECURITY ADVISORY First Issued: Thu Mar 6 11:54:14 CST 2014 | Updated: Tue Apr 8 09:03:53 CDT 2014 | Update: File set level for affected vwpar.53.rte corrected The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/wparcre_advisory.asc https://aix.software.ibm.com/aix/efixes/security/wparcre_advisory.asc ftp://aix.software.ibm.com/aix/efixes/security/wparcre_advisory.asc =============================================================================== VULNERABILITY SUMMARY VULNERABILITY: Security Vulnerability in WPAR ftp for AIX PLATFORMS: 7.1 SOLUTION: Apply the fix as described below. THREAT: See below. CVE Number: CVE-2014-0899 Reboot required? NO Workarounds? YES Protected by FPM? NO Protected by SED? NO =============================================================================== DETAILED INFORMATION I. DESCRIPTION If ftpd is run in a 5.2 or 5.3 WPAR, a non-root user who logs in via ftp is allowed to access all files within the WPAR. II. CVSS CVSS Base Score: 5.5 CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/91396 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:P) III. PLATFORM VULNERABILITY ASSESSMENT The following fileset levels are vulnerable: AIX Fileset AIX Level Lower Level Upper Level KEY ---------------------------------------------------------------------------- vwpar.52.rte 7.1.1 1.1.0.0 1.1.1.19 key_w_fs vwpar.52.rte 7.1.2 1.1.2.0 1.1.2.17 key_w_fs AIX Fileset AIX Level Lower Level Upper Level KEY ---------------------------------------------------------------------------- | vwpar.53.rte 7.1.1 1.1.0.0 1.1.1.18 key_w_fs vwpar.53.rte 7.1.2 1.1.2.0 1.1.2.15 key_w_fs NOTE: To find out whether the affected filesets are installed on your systems, refer to the lslpp command found in AIX user's guide. IV. SOLUTIONS A. APARS IBM has assigned the following APARs to this problem: AIX Level APAR number Availability SP KEY --------------------------------------------------------------------- 7.1.1 IV51420 08/29/2014 SP10 key_w_apar 7.1.2 IV51421 08/29/2014 SP5 key_w_apar Subscribe to the APARs here: http://www.ibm.com/support/docview.wss?uid=isg1IV51420 http://www.ibm.com/support/docview.wss?uid=isg1IV51421 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 from: ftp://aix.software.ibm.com/aix/efixes/security/wparcre_fix.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) KEY --------------------------------------------------------------------- 7.1.1.8 Wpar 5.2 IV51420s52.131030.epkg.Z key_w_fix 7.1.1.8 Wpar 5.3 IV51420s53.131031.epkg.Z key_w_fix 7.1.2.3 Wpar 5.2 IV51421s52.131030.epkg.Z key_w_fix 7.1.2.3 Wpar 5.3 IV51421s53.131031.epkg.Z key_w_fix The epkg's named with an "s52" must be applied inside a 5.2 WPAR, and those with the "s53" must be applied inside a 5.3 WPAR. The WPAR(s) can be either rootvg WPAR or non-rootvg; either is fine. To extract the fixes from the tar file: tar xvf wparcre_fix.tar cd wparcre_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 ------------------------------------------------------------------ a175a14ca5756b80649bd864d392eeddc1fc6451 IV51420s52.131030.epkg.Z fc1dac514e75cbe72ba571143f82ddfd6d2ad551 IV51420s53.131031.epkg.Z 6550a8e30162348ab725b4750d979d3f9f5a9a85 IV51421s52.131030.epkg.Z 301b071f5d95acb5b365bb91822619cbe7465bbf IV51421s53.131031.epkg.Z To verify the sum, use the text of this advisory as input to sha1sum. For example: csum -h SHA1 -i wparcre_advisory.asc sha1sum -c wparcre_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. V. WORKAROUNDS Do not run ftpd in a 5.2 or 5.3 WPAR. VI. CONTACT INFORMATION If you would like to receive AIX Security Advisories via email, please visit: 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 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: Note: Keywords labeled as KEY in this document are used for parsing purposes. 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/91396 CVE-2014-0899: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0899 *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) iEYEARECAAYFAlNEAhUACgkQ4fmd+Ci/qhJNHACfWt5hyXQiqCVXF7m59K+eo/o4 tl0AnisiY9dgMgB4u63UnyeuzmzmVhoi =DQnc -----END PGP SIGNATURE-----