SECURITY (Doc Number=3586): Update Arbitary file overwrite symlink in libodm (CVE-2012-2179)

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 IBM SECURITY ADVISORY  First Issued: Thu Jun 20 13:00:02 CDT 2012  Updated: Mon Oct 29 11:43:29 CDT 2012  Update: IFIX and CSUM for 6100-07-04  Update: New ifixes for the latest SP's |Updated: Thu May 23 11:04:10 CDT 2014 |Update: New APAR/Interim Fixes |Update: CONTACT INFORMATION |Update: ACKNOWLEDGMENTS  The most recent version of this document is available here:  http://aix.software.ibm.com/aix/efixes/security/libodm_advisory.asc ===============================================================================                            VULNERABILITY SUMMARY  VULNERABILITY:      Arbitary file overwrite symlink in libodm  |PLATFORMS:          6.1, and 7.1 releases |                    VIOS 2.2.*  SOLUTION:           Apply the fix as described below  THREAT:             A local attacker could gain lateral or elevated privileges  CVE Number:         CVE-2012-2179  Reboot required?    YES Workarounds?        NO Protected by FPM?   NO Protected by SED?   NO ===============================================================================                            DETAILED INFORMATION  I. DESCRIPTION      AIX could allow a arbitrary file overwrite symlink vulnerability     due to libodm.a bug.  II. CVSS      CVSS Base Score: 6.9     CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/75510 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      Note: To use the following commands on VIOS you must first     execute:      oem_setup_env      To determine if your system is vulnerable, execute the following     command:      lslpp -L bos.rte.odm      The following fileset levels are vulnerable:      AIX Fileset        Lower Level       Upper Level     ------------------------------------------------ |   bos.rte.odm        6.1.7.0           6.1.7.16 |   bos.rte.odm        6.1.8.0           6.1.8.0 |   bos.rte.odm        6.1.9.0           6.1.9.0 |   bos.rte.odm        7.1.1.0           7.1.1.16 |   bos.rte.odm        7.1.2.0           7.1.2.15 |   bos.rte.odm        7.1.3.0           7.1.3.0  |   AIX Fileset (VIOS)  Lower Level           Upper Level |   ---------------------------------------------------------------- |   bos.rte.odm         6.1.7.0(2.2.1.0)      6.1.7.16(2.2.1.8) |   bos.rte.odm         6.1.8.0(2.2.2.0)      6.1.8.0(2.2.2.4) |   bos.rte.odm         6.1.9.0(2.2.3.0)      6.1.9.0 (2.2.3.2)   IV. SOLUTIONS      A. APARS          IBM has assigned the following APARs to this problem:          AIX Level        APAR number     Availability         --------------------------------------------------- |       6.1.7            IV60313         08/29/2014 SP10 |       6.1.8            IV60311         08/29/2014 SP5 |       6.1.9            IV60299         06/03/2014 SP3 |       7.1.1            IV60312         08/29/2014 SP10 |       7.1.2            IV60314         08/29/2014 SP5 |       7.1.3            IV60303         06/03/2014 SP3          Subscribe to the APARs here:  |       http://www.ibm.com/support/docview.wss?uid=isg1IV60313 |       http://www.ibm.com/support/docview.wss?uid=isg1IV60311 |       http://www.ibm.com/support/docview.wss?uid=isg1IV60299 |       http://www.ibm.com/support/docview.wss?uid=isg1IV60312 |       http://www.ibm.com/support/docview.wss?uid=isg1IV60314 |       http://www.ibm.com/support/docview.wss?uid=isg1IV60303          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/libodm_ifix.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)         ------------------------------------------------------------------- |       6.1.7.9      IV60313s9a.140515.epkg.Z     key_w_fix |       6.1.8.4      IV60311s4a.140515.epkg.Z     key_w_fix |       6.1.9.2      IV60299s2a.140515.epkg.Z     key_w_fix |       7.1.1.9      IV60312s9a.140515.epkg.Z     key_w_fix |       7.1.2.4      IV60314s4a.140515.epkg.Z     key_w_fix |       7.1.3.2      IV60303s2a.140515.epkg.Z     key_w_fix          VIOS Level                    Interim Fix (*.Z)         ------------------------------------------------------------------- |       2.2.1.8                       IV60313s9a.140515.epkg.Z |       2.2.2.4                       IV60311s4a.140515.epkg.Z |       2.2.3.2                       IV60299s2a.140515.epkg.Z          To extract the fixes from the tar file:          tar xvf libodm_ifix.tar         cd libodm_ifix          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         ------------------------------------------------------------------ |       3f0fad2c7aa306c3734abfe37a90da27f2746b0b  IV60313s9a.140515.epkg.Z |       838ecef0b07ce299db71ee75b4b4cf7421bb512d  IV60311s4a.140515.epkg.Z |       d2d9140cf0d34eb8315dd07b03e5aedecd640aba  IV60299s2a.140515.epkg.Z |       ef83ed48203525ffa96c91184732778c8657e60e  IV60312s9a.140515.epkg.Z |       72b88677f23d2972f16d827b2d77e801eea833c7  IV60314s4a.140515.epkg.Z |       ba76617832bb803737fa4f8aee210846631632b3  IV60303s2a.140515.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; thus, IBM does not warrant the fully         correct functionality of an interim fix.          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      None  VI. OBTAINING FIXES      AIX security fixes can be downloaded from:          ftp://aix.software.ibm.com/aix/efixes/security      AIX fixes can be downloaded from:          http://www.ibm.com/eserver/support/fixes/fixcentral/main/pseries/aix      NOTE: Affected customers are urged to upgrade to the latest     applicable Technology Level and Service Pack.  VII. 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 request 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 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.  VIII. ACKNOWLEDGMENTS      This vulnerability was originally reported by Jakub Wartak. |   Update to vulnerability requiring new Interim Fixes was reported by |   Tim Brown from Portcullis Computer Security Ltd.  IX. 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/75510     CVE-2012-2179: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2179      *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.