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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
|Updated: Thu Jun 5 13:01:39 CDT 2014
|Update: Changed CVE# from CVE-2012-2179 to CVE-2014-3977
|Update: New CVSS Temporal Score link
The most recent version of this document is available here:
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-2014-3977
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/93595 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (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 KEY
--------------------------------------------------------
bos.rte.odm 6.1.7.0 6.1.7.16 key_w_fix
bos.rte.odm 6.1.8.0 6.1.8.0 key_w_fix
bos.rte.odm 6.1.9.0 6.1.9.0 key_w_fix
bos.rte.odm 7.1.1.0 7.1.1.16 key_w_fix
bos.rte.odm 7.1.2.0 7.1.2.15 key_w_fix
bos.rte.odm 7.1.3.0 7.1.3.0 key_w_fix
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 KEY
------------------------------------------------------------
6.1.7 IV60313 08/29/2014 SP10 key_w_fix
6.1.8 IV60311 08/29/2014 SP5 key_w_fix
6.1.9 IV60299 06/03/2014 SP3 key_w_fix
7.1.1 IV60312 08/29/2014 SP10 key_w_fix
7.1.2 IV60314 08/29/2014 SP5 key_w_fix
7.1.3 IV60303 06/03/2014 SP3 key_w_fix
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) KEY
---------------------------------------------------
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
[email protected] 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:
[email protected]
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:
[email protected]
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.
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