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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2015.0142
AIX NAS vulnerability CVE-2014-5351 and AIX cmdlvm
vulnerability CVE-2014-8904
21 January 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: AIX
Publisher: IBM
Operating System: AIX
Impact/Access: Root Compromise -- Existing Account
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2014-8904 CVE-2014-5351
Reference: ESB-2015.0102
ESB-2014.2204
Original Bulletin:
http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq?mode=18&ID=3985
http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq?mode=18&ID=3989
Comment: This bulletin contains two (2) IBM security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Technical bulletin
AIX NAS vulnerability CVE-2014-5351
IBM SECURITY ADVISORY
First Issued:Tue Jan 20 04:42:45 CST 2015
The most recent version of this document is available here:
http://aix.software.ibm.com/aix/efixes/security/nas_advisory2.asc
https://aix.software.ibm.com/aix/efixes/security/nas_advisory2.asc
ftp://aix.software.ibm.com/aix/efixes/security/nas_advisory2.asc
===============================================================================
VULNERABILITY SUMMARY
VULNERABILITY: Return only new keys in randkey
PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.X
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2014-5351
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
===============================================================================
DETAILED INFORMATION
I. DESCRIPTION
CVE-2014-5351
kadmind sends old keys in a response to a -randkey -keepold request, which
allows
remote authenticated users to forge tickets by leveraging administrative
access.
II. CVSS
CVE-2014-5351
CVSS Base Score:4
CVSS Temporal Score:see http://xforce.iss.net/xforce/xfdb/97028
CVSS Environmental Score*:Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:N)
III. PLATFORM VULNERABILITY ASSESSMENT
To determine if your system is vulnerable, execute the following
command to obtain the NAS fileset level:
lslpp -L krb5.client.rte
lslpp -L krb5.server.rte
The following fileset levels are vulnerable:
AIX 7.1, 6.1, 5.3: all NAS versions below 1.5.0.7 and 1.6.0.2
VIOS 2.X: all NAS versions below 1.5.0.7 and 1.6.0.2
Note:
- NAS 1.6.0.x is a separate release branch for NAS SPNEGO feature.
- To find out whether the affected filesets are installed on your
systems, refer to the lslpp command found in AIX user's guide.
IV. FIXES
A fix is available, and it can be downloaded from:
https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp
If NAS SPNEGO feature is under use, then download NAS 1.6.0.2 version,
else download NAS 1.5.0.7 version.
To extract the fixes from the tar file:
zcat NAS_1.X.0.X_aix_image.tar.Z | tar xvf -
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 the fix installation:
installp -apYd . krb5
To install the fix package:
installp -aXYd . krb5
V. WORKAROUNDS
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. 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/97028
CVE-2014-5351: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5351
*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.
- ---------------------------------------------------------------------------
Technical bulletin
AIX cmdlvm vulnerability CVE-2014-8904
IBM SECURITY ADVISORY
First Issued: Tue Jan 13 12:44:56 AM CST 2015
|Updated: Tue Jan 20 08:37:23 CST 2015
|Update: Added Acknowledgment
The most recent version of this document is available here:
http://aix.software.ibm.com/aix/efixes/security/lvm_advisory.asc
https://aix.software.ibm.com/aix/efixes/security/lvm_advisory.asc
ftp://aix.software.ibm.com/aix/efixes/security/lvm_advisory.asc
===============================================================================
VULNERABILITY SUMMARY
VULNERABILITY: AIX cmdlvm vulnerability
PLATFORMS: AIX 5.3, 6.1 and 7.1 releases
VIOS 2.2.*
SOLUTION: Apply the fix as described below
THREAT: An attacker could gain elevated privileges
CVE Number: CVE-2014-8904 CVSS=7.2
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
===============================================================================
DETAILED INFORMATION
I. DESCRIPTION
The running of lquerylv command with variable DBGCMD_LQUERYLV set may
allow a local user to gain root privileges.
II. CVSS
CVSS Base Score: 7.2
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/99193 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/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.lvm
The following fileset levels are vulnerable:
AIX Fileset Lower Level Upper Level KEY
--------------------------------------------------------
bos.rte.lvm 5.3.12.0 5.3.12.9 key_w_fs
bos.rte.lvm 6.1.8.0 6.1.8.18 key_w_fs
bos.rte.lvm 6.1.9.0 6.1.9.30 key_w_fs
bos.rte.lvm 7.1.2.0 7.1.2.18 key_w_fs
bos.rte.lvm 7.1.3.0 7.1.3.30 key_w_fs
AIX Fileset (VIOS) Lower Level Upper Level
-------------------------------------------------------------
bos.rte.lvm 6.1.8.0(2.2.2.0) 6.1.8.18(2.2.2.4)
bos.rte.lvm 6.1.9.0(2.2.3.0) 6.1.9.30(2.2.3.3)
IV. SOLUTIONS
A. APARS
IBM has assigned the following APARs to this problem:
AIX Level APAR number Availability KEY
------------------------------------------------------------
5.3.12 IV68070 ifix_only n/a key_w_apar
6.1.8 IV68082 01/30/2015 SP6 key_w_apar
6.1.9 IV67907 05/29/2015 SP5 key_w_apar
7.1.2 IV68478 01/30/2015 SP6 key_w_apar
7.1.3 IV67908 05/29/2015 SP5 key_w_apar
Subscribe to the APARs here:
http://www.ibm.com/support/docview.wss?uid=isg1IV68070
http://www.ibm.com/support/docview.wss?uid=isg1IV68082
http://www.ibm.com/support/docview.wss?uid=isg1IV67907
http://www.ibm.com/support/docview.wss?uid=isg1IV68478
http://www.ibm.com/support/docview.wss?uid=isg1IV67908
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/lvm_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 IV68070s9a.141219.epkg.Z key_w_fix
6.1.8.5 IV68082s5a.141219.epkg.Z key_w_fix
6.1.9.4 IV68099s4a.150112.epkg.Z key_w_fix
7.1.2.5 IV68478s5a.150112.epkg.Z key_w_fix
7.1.3.4 IV67908s4a.150112.epkg.Z key_w_fix
VIOS Level Interim Fix (*.Z)
-------------------------------------
2.2.2.4 IV68082s5a.141219.epkg.Z
2.2.3.3 IV68099s4a.150112.epkg.Z
To extract the fixes from the tar file:
tar xvf lvm_ifix.tar
cd lvm_ifix
Verify you have retrieved the fixes intact:
The checksums below were generated using the
"openssl dgst -sha256 file" command is the following:
openssl dgst -sha256 filename KEY
- --------------------------------------------------------------
- --------------------------------------
05273ee3d68443160961c1efdc007bd44d4fff6e6501fb0ad6c1a2922d84ef0a
IV68070s9a.141219.epkg.Z key_w_csum
cf30e6291aca147aaadcda3b02aba9b5356c665bf4017bd8bc9fe198be3f76ea
IV68082s5a.141219.epkg.Z key_w_csum
607c92629f5461e3828895dc2bc601dc11894a93e4d24e82031594fa1ac9836f
IV68099s4a.150112.epkg.Z key_w_csum
f9261645452ba960197c7bdc89a73996c0dc2330f9ff05f0adcdeb7de1d9b4be
IV68478s5a.150112.epkg.Z key_w_csum
9e5a0934bca3eae83663adb0be7c391284bbaf202e3a55ada6d80553ea966f5f
IV67908s4a.150112.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.
Published advisory OpenSSL signature file location:
http://aix.software.ibm.com/aix/efixes/security/lvm_advisory.asc.sig
https://aix.software.ibm.com/aix/efixes/security/lvm_advisory.asc.sig
ftp://aix.software.ibm.com/aix/efixes/security/lvm_advisory.asc.sig
openssl dgst -sha1 -verify -signature .sig
openssl dgst -sha1 -verify -signature .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; 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.
To list all installed Interim Fixes:
emgr -l
To remove an installed Interim Fix:
emgr -r -L ipkg_label # where ipgk_label is the label (e.g.,
# IV61313s9a) of the interim fix
# package being removed.
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 "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 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.
VIII. ACKNOWLEDGMENTS
| An anonymous researcher working with Beyond Security's SecuriTeam Secure
| Disclosure project.
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-2014-8904: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8904
*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.
Doc number: 3989 Published date: 20150120
Doc number: 3985 Published date: 20150120
- --------------------------END INCLUDED TEXT--------------------
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