CentOS ProjectBIND_ADVISORY16.ASCThere are vulnerabilities in BIND that impact AIX.
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.04 Low
EPSS
Percentile
91.9%
IBM SECURITY ADVISORY
First Issued: Wed Aug 23 09:01:23 CDT 2017
|Updated: Mon Nov 13 14:29:35 CST 2017
|Update 2: Updated the APAR section to reflect that the relevant APARs are
| shipping in 6100-09-11, 7100-04-06, 7200-00-06, and 7200-01-04.
| Corrected the impacted upper level filesets for 6100-09, 7100-04,
| 7200-00, and 7200-01. Clarified that VIOS is impacted as well.
| The following VRMFs are vulnerable:
| AIX 6.1.9: bos.net.tcp.client up to and including 6.1.9.300
| AIX 7.1.4: bos.net.tcp.client up to and including 7.1.4.32
| AIX 7.2.0: bos.net.tcp.client_core up to and including 7.2.0.4
| AIX 7.2.1: bos.net.tcp.client_core up to and including 7.2.1.2
| New iFixes provided for AIX 6100-09-10, 7100-04-05, 7200-00-05, and
| 7200-01-03, and iFix provided for VIOS 2.2.6.0.
The most recent version of this document is available here:
http://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
https://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
ftp://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc
Security Bulletin: Vulnerabilities in BIND impact AIX (CVE-2017-3142 and
CVE-2017-3143)
===============================================================================
SUMMARY:
There are vulnerabilities in BIND that impact AIX.
===============================================================================
VULNERABILITY DETAILS:
CVEID: CVE-2017-3142
https://vulners.com/cve/CVE-2017-3142
https://vulners.com/cve/CVE-2017-3142
DESCRIPTION: ISC BIND could allow a remote attacker to bypass security
restrictions, caused by an error when an attacker can send and receive
messages to an authoritative DNS server and has knowledge of a valid
TSIG key name. By sending a specially crafted request packet, an
attacker could exploit this vulnerability to bypass TSIG authentication
on AXFR requests and transfer the target zone.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/127901 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2017-3143
https://vulners.com/cve/CVE-2017-3143
https://vulners.com/cve/CVE-2017-3143
DESCRIPTION: ISC BIND could allow a remote attacker to bypass security
restrictions, caused by an error when an attacker can send and receive
messages to an authoritative DNS server and has knowledge of a valid
TSIG key name. By sending specially crafted data, an attacker could
exploit this vulnerability to bypass TSIG authentication and
manipulate BIND into accepting an unauthorized dynamic update.
CVSS Base Score: 7.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/127902 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
AFFECTED PRODUCTS AND VERSIONS:
AIX 5.3, 6.1, 7.1, 7.2
| VIOS 2.2
The following fileset levels are vulnerable:
key_fileset = aix
Fileset Lower Level Upper Level KEY
------------------------------------------------------------
bos.net.tcp.client 5.3.12.0 5.3.12.10 key_w_fs
| bos.net.tcp.client 6.1.9.0 6.1.9.300 key_w_fs
bos.net.tcp.client 7.1.3.0 7.1.3.49 key_w_fs
| bos.net.tcp.client 7.1.4.0 7.1.4.32 key_w_fs
| bos.net.tcp.client_core 7.2.0.0 7.2.0.4 key_w_fs
| bos.net.tcp.client_core 7.2.1.0 7.2.1.2 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.
Example: lslpp -L | grep -i bos.net.tcp.client
REMEDIATION:
A. APARS
IBM has assigned the following APARs to this problem:
AIX Level APAR Availability SP KEY
------------------------------------------------
5.3.12 IV98825 ** N/A key_w_apar
| 6.1.9 IV98826 ** SP11 key_w_apar
7.1.3 IV98827 ** N/A key_w_apar
| 7.1.4 IV98828 ** SP6 key_w_apar
| 7.2.0 IV98829 ** SP6 key_w_apar
| 7.2.1 IV98830 ** SP4 key_w_apar
** Please refer to AIX support lifecycle information page for
availability of Service Packs:
http://www-01.ibm.com/support/docview.wss?uid=isg3T1012517
Subscribe to the APARs here:
http://www.ibm.com/support/docview.wss?uid=isg1IV98826
http://www.ibm.com/support/docview.wss?uid=isg1IV98827
http://www.ibm.com/support/docview.wss?uid=isg1IV98828
http://www.ibm.com/support/docview.wss?uid=isg1IV98829
http://www.ibm.com/support/docview.wss?uid=isg1IV98830
https://www.ibm.com/support/docview.wss?uid=isg1IV98826
https://www.ibm.com/support/docview.wss?uid=isg1IV98827
https://www.ibm.com/support/docview.wss?uid=isg1IV98828
https://www.ibm.com/support/docview.wss?uid=isg1IV98829
https://www.ibm.com/support/docview.wss?uid=isg1IV98830
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 or http from:
ftp://aix.software.ibm.com/aix/efixes/security/bind_fix16.tar
http://aix.software.ibm.com/aix/efixes/security/bind_fix16.tar
https://aix.software.ibm.com/aix/efixes/security/bind_fix16.tar
The links above are 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 IV98825m9a.170830.epkg.Z key_w_fix
6.1.9.7 IV98826m9a.170809.epkg.Z key_w_fix
6.1.9.8 IV98826m9a.170809.epkg.Z key_w_fix
6.1.9.9 IV98826m9a.170809.epkg.Z key_w_fix
| 6.1.9.10 IV98826m0a.171105.epkg.Z key_w_fix
7.1.3.7 IV98827m3a.170808.epkg.Z key_w_fix
7.1.3.8 IV98827m3a.170808.epkg.Z key_w_fix
7.1.3.9 IV98827m3a.170808.epkg.Z key_w_fix
7.1.4.2 IV98828m4a.170808.epkg.Z key_w_fix
7.1.4.3 IV98828m4a.170808.epkg.Z key_w_fix
7.1.4.4 IV98828m4a.170808.epkg.Z key_w_fix
| 7.1.4.5 IV98828m5b.171110.epkg.Z key_w_fix
7.2.0.2 IV98829m0a.170809.epkg.Z key_w_fix
7.2.0.3 IV98829m0a.170809.epkg.Z key_w_fix
7.2.0.4 IV98829m0a.170809.epkg.Z key_w_fix
| 7.2.0.5 IV98829m0b.171106.epkg.Z key_w_fix
7.2.1.0 IV98830m1a.170809.epkg.Z key_w_fix
7.2.1.1 IV98830m1a.170809.epkg.Z key_w_fix
7.2.1.2 IV98830m1a.170809.epkg.Z key_w_fix
| 7.2.1.3 IV98830m1b.171106.epkg.Z key_w_fix
| VIOS Level Interim Fix (*.Z) KEY |
|---|
| 2.2.6.0 IV98826m0a.171105.epkg.Z key_w_fix |
Please note that the above table refers to AIX TL/SP level as
opposed to fileset level, i.e., 7.1.3.7 is AIX 7100-03-07.
The above fixes are cumulative and address previously issued
AIX BIND security bulletins with respect to SP and TL.
To extract the fixes from the tar file:
tar xvf bind_fix16.tar
cd bind_fix16
Verify you have retrieved the fixes intact:
The checksums below were generated using the
"openssl dgst -sha256 [filename]" command as the following:
openssl dgst -sha256 filename KEY
-----------------------------------------------------------------------------------------------------
28b9adcdee9562fa0d04fa8d9689305f4be5670455a8191e9383e7a961259814 IV98825m9a.170830.epkg.Z key_w_csum
5c483daf9725efd11d1c46a8b81fcd3f33cd5fe97a7b8723384d4ab76b68c249 IV98826m9a.170809.epkg.Z key_w_csum
| 3f6115181d53724414c23a8af636d0e04c84a687f06c4796224eefe44e8720bf IV98826m0a.171105.epkg.Z key_w_csum
81ae02a234b85bcd1c60bb9e5f710ff44a90246444686fbf1c127bee17cc9b5d IV98827m3a.170808.epkg.Z key_w_csum
05037edcdb0db761be005550c216efd21d9787c9f2e3da2872f245b5bbd96673 IV98828m4a.170808.epkg.Z key_w_csum
| f95f352d762c0daffff87053771f38b804684ca5be24857b38a5327e186b8c44 IV98828m5b.171110.epkg.Z key_w_csum
4e5273dea44179e3c46f617d6295492620eddce58675030a46e2531db263ccef IV98829m0a.170809.epkg.Z key_w_csum
| 5cf4366ed68c335fdf38a4cdade7d7e7d1f6fbb047c0256ad026a010616dadea IV98829m0b.171106.epkg.Z key_w_csum
462f4c61f196ce49f99878447f975e748a51f4e3627ea93e6fa381f0ea6c3542 IV98830m1a.170809.epkg.Z key_w_csum
| 1b95f895e6fedb661a7a707eb3f65ea0ac450dcc428e97dc8f08080e0961e369 IV98830m1b.171106.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 Support at
http://ibm.com/support/ and describe the discrepancy.
openssl dgst -sha1 -verify [pubkey_file] -signature [advisory_file].sig [advisory_file]
openssl dgst -sha1 -verify [pubkey_file] -signature [ifix_file].sig [ifix_file]
Published advisory OpenSSL signature file location:
http://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc.sig
https://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc.sig
ftp://aix.software.ibm.com/aix/efixes/security/bind_advisory16.asc.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; 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
https://www14.software.ibm.com/webapp/set2/sas/f/aix.efixmgmt/home.html
To preview an interim fix installation:
emgr -e epkg_name -p # where epkg_name is the name of the
# interim fix package being previewed.
To install an interim fix package:
emgr -e epkg_name -X # where epkg_name is the name of the
# interim fix package being installed.
WORKAROUNDS AND MITIGATIONS:
None.
===============================================================================
CONTACT US:
Note: Keywords labeled as KEY in this document are used for parsing
purposes.
If you would like to receive AIX Security Advisories via email,
please visit "My Notifications":
http://www.ibm.com/support/mynotifications
https://www.ibm.com/support/mynotifications
To view previously issued advisories, please visit:
http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq
https://www14.software.ibm.com/webapp/set2/subscriptions/onvdq
Contact IBM Support for questions related to this announcement:
http://ibm.com/support/
https://ibm.com/support/
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
https://www.ibm.com/systems/resources/systems_p_os_aix_security_pubkey.txt
To obtain the PGP public key that can be used to communicate
securely with the AIX Security Team via [email protected] you
can either:
A. Download the key from our web page:
http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgppubkey.txt
https://www.ibm.com/systems/resources/systems_p_os_aix_security_pgppubkey.txt
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.
REFERENCES:
Complete CVSS v3 Guide:
http://www.first.org/cvss/user-guide
https://www.first.org/cvss/user-guide
On-line Calculator v3:
http://www.first.org/cvss/calculator/3.0
https://www.first.org/cvss/calculator/3.0
ACKNOWLEDGEMENTS:
None.
CHANGE HISTORY:
First Issued: Wed Aug 23 09:01:23 CDT 2017
Updated: Wed Sep 13 08:17:47 CDT 2017
Update 1: Added AIX 5.3, 7.1.4, 7.2.0, and 7.2.1 as impacted.
Impacted fileset information added for AIX 5.3, 7.1.4, 7.2.0, and 7.2.1.
iFixes added for AIX 5.3.12.9, 7.1.4.2, 7.1.4.3, 7.1.4.4, 7.2.0.2,
7.2.0.3, 7.2.0.4, 7.2.1.0, 7.2.1.1, 7.2.2.2.
| Updated: Mon Nov 13 14:29:35 CST 2017
| Update 2: Updated the APAR section to reflect that the relevant APARs are
| shipping in 6100-09-11, 7100-04-06, 7200-00-06, and 7200-01-04.
| Corrected the impacted upper level filesets for 6100-09, 7100-04,
| 7200-00, and 7200-01. Clarified that VIOS is impacted as well.
| The following VRMFs are vulnerable:
| AIX 6.1.9: bos.net.tcp.client up to and including 6.1.9.300
| AIX 7.1.4: bos.net.tcp.client up to and including 7.1.4.32
| AIX 7.2.0: bos.net.tcp.client_core up to and including 7.2.0.4
| AIX 7.2.1: bos.net.tcp.client_core up to and including 7.2.1.2
| New iFixes provided for AIX 6100-09-10, 7100-04-05, 7200-00-05, and
| 7200-01-03.
===============================================================================
*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 Security Bulletin.
Disclaimer
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.
Related
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.04 Low
EPSS
Percentile
91.9%