CentOS ProjectXORG_ADVISORY3.ASCThere is a vulnerability in Xorg that affects AIX.,There is a vulnerability in Xorg that affects VIOS.
6.6 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.032 Low
EPSS
Percentile
91.1%
IBM SECURITY ADVISORY
First Issued: Tue Dec 11 09:32:52 CST 2018
|Updated: Tue Apr 9 09:52:17 CDT 2019
|Update: Added AIX 7100-04-07 and 7200-02-03 as affected.
| Added iFixes for AIX 7100-04-07 and 7200-02-03.
The most recent version of this document is available here:
http://aix.software.ibm.com/aix/efixes/security/xorg_advisory3.asc
https://aix.software.ibm.com/aix/efixes/security/xorg_advisory3.asc
ftp://aix.software.ibm.com/aix/efixes/security/xorg_advisory3.asc
Security Bulletin: Vulnerability in Xorg affects AIX (CVE-2018-14665)
===============================================================================
SUMMARY:
There is a vulnerability in Xorg that affects AIX.
===============================================================================
VULNERABILITY DETAILS:
CVEID: CVE-2018-14665
https://vulners.com/cve/CVE-2018-14665
https://vulners.com/cve/CVE-2018-14665
DESCRIPTION: X.Org X server could allow a remote authenticated attacker
to gain elevated privileges on the system, caused by improper
validation of command line parameters. An attacker could exploit this
vulnerability using the -modulepath argument or the -logfile argument
to overwrite arbitrary files and execute unprivileged code on the
system.
CVSS Base Score: 8.8
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/151991
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
AFFECTED PRODUCTS AND VERSIONS:
AIX 6.1, 7.1, 7.2
VIOS 2.2.x
The following fileset levels are vulnerable:
key_fileset = aix
Fileset Lower Level Upper Level KEY
---------------------------------------------------------
X11.base.rte 6.1.9.0 6.1.9.100 key_w_fs
| X11.base.rte 7.1.4.0 7.1.4.31 key_w_fs
X11.base.rte 7.1.5.0 7.1.5.31 key_w_fs
X11.base.rte 7.2.0.0 7.2.0.1 key_w_fs
X11.base.rte 7.2.1.0 7.2.1.0 key_w_fs
| X11.base.rte 7.2.2.0 7.2.2.16 key_w_fs
X11.base.rte 7.2.3.0 7.2.3.15 key_w_fs
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 X11.base.rte
REMEDIATION:
A. APARS
IBM has assigned the following APARs to this problem:
AIX Level APAR Availability SP KEY
------------------------------------------------
6.1.9 IJ11000 ** N/A key_w_apar
7.1.4 IJ11544 ** SP08 key_w_apar
7.1.5 IJ11544 ** N/A key_w_apar
7.1.5 IJ11545 ** SP04 key_w_apar
7.2.0 IJ11546 ** N/A key_w_apar
7.2.1 IJ11547 ** SP06 key_w_apar
7.2.2 IJ11549 ** SP04 key_w_apar
7.2.3 IJ11550 ** SP03 key_w_apar
VIOS Level APAR Availability SP KEY
----------------------------------------------------
2.2.4 IJ11000 ** N/A key_w_apar
2.2.5 IJ11000 ** 2.2.5.60 key_w_apar
2.2.6 IJ11000 ** 2.2.6.40 key_w_apar
3.1.0 IJ11550 ** 3.1.0.20 key_w_apar
Subscribe to the APARs here:
http://www.ibm.com/support/docview.wss?uid=isg1IJ11000
http://www.ibm.com/support/docview.wss?uid=isg1IJ11544
http://www.ibm.com/support/docview.wss?uid=isg1IJ11545
http://www.ibm.com/support/docview.wss?uid=isg1IJ11546
http://www.ibm.com/support/docview.wss?uid=isg1IJ11547
http://www.ibm.com/support/docview.wss?uid=isg1IJ11549
http://www.ibm.com/support/docview.wss?uid=isg1IJ11550
https://www.ibm.com/support/docview.wss?uid=isg1IJ11000
https://www.ibm.com/support/docview.wss?uid=isg1IJ11544
https://www.ibm.com/support/docview.wss?uid=isg1IJ11545
https://www.ibm.com/support/docview.wss?uid=isg1IJ11546
https://www.ibm.com/support/docview.wss?uid=isg1IJ11547
https://www.ibm.com/support/docview.wss?uid=isg1IJ11549
https://www.ibm.com/support/docview.wss?uid=isg1IJ11550
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
AIX and VIOS fixes are available.
The AIX and VIOS fixes can be downloaded via ftp or http from:
ftp://aix.software.ibm.com/aix/efixes/security/xorg_fix3.tar
http://aix.software.ibm.com/aix/efixes/security/xorg_fix3.tar
https://aix.software.ibm.com/aix/efixes/security/xorg_fix3.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
----------------------------------------------
6.1.9.x IJ11000s0b.181127.epkg.Z key_w_fix
7.1.4.4 IJ11544s0a.181127.epkg.Z key_w_fix
7.1.4.5 IJ11544s0a.181127.epkg.Z key_w_fix
7.1.4.6 IJ11544s0a.181127.epkg.Z key_w_fix
| 7.1.4.7 IJ11544s0a.190312.epkg.Z key_w_fix
7.1.5.0 IJ11544s0a.181127.epkg.Z key_w_fix
7.1.5.1 IJ11544s0a.181127.epkg.Z key_w_fix
7.1.5.2 IJ11544s0a.181127.epkg.Z key_w_fix
7.1.5.3 IJ11544s0a.181127.epkg.Z key_w_fix
7.1.5.3 IJ11545s0a.181127.epkg.Z key_w_fix
7.2.0.x IJ11546s0a.181127.epkg.Z key_w_fix
7.2.1.x IJ11547s0a.181127.epkg.Z key_w_fix
7.2.2.x IJ11549s0a.181127.epkg.Z key_w_fix
7.2.2.0 IJ11549s0a.181127.epkg.Z key_w_fix
7.2.2.1 IJ11549s0a.181127.epkg.Z key_w_fix
7.2.2.2 IJ11549s0a.181127.epkg.Z key_w_fix
| 7.2.2.3 IJ11549s0a.190312.epkg.Z key_w_fix
7.2.3.x IJ11550s0a.181127.epkg.Z key_w_fix
Please reference the Affected Products and Version section above
for help with checking installed fileset levels.
NOTE: Multiple iFixes are provided for AIX 7100-05-03.
IJ11544s0a is for AIX 7100-05-03 with X11.base.rte fileset level 7.1.4.30.
IJ11545s0a is for AIX 7100-05-03 with X11.base.rte fileset level 7.1.5.31.
VIOS Level Interim Fix (*.Z) KEY
-----------------------------------------------
2.2.x IJ11000s0b.181127.epkg.Z key_w_fix
3.1.x IJ11550s0a.181127.epkg.Z key_w_fix
To extract the fixes from the tar file:
tar xvf xorg_fix3.tar
cd xorg_fix3
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
-----------------------------------------------------------------------------------------------------
81a407e154ab90e003135bf075f171b127d811e3a9177cb866d589ff2459ef19 IJ11000s0b.181127.epkg.Z key_w_csum
458f8391ceabeedf418f54595ce9ef87d63a667369dc4a3112b8548bff80fb6d IJ11544s0a.181127.epkg.Z key_w_csum
| 2b719e0b4d8bdcb89f97ffe1ecceccfbf0538cb2cdec66b8214eeae7c7b37958 IJ11544s0a.190312.epkg.Z key_w_csum
041e1271b858211365025a4528c71f453c72405a1f0809128e0c70d49886a166 IJ11545s0a.181127.epkg.Z key_w_csum
1f4f7a7ef34c7804464ccdc02f1a253ac373a9c66ee3144350b390509976cfad IJ11546s0a.181127.epkg.Z key_w_csum
8aac56821f52600ee3158efa39e0bf697813712364b946c199fbb32dd1da9ce6 IJ11547s0a.181127.epkg.Z key_w_csum
7518d581224e6b4332b4cfab48253a7427fb0e3ab866567766b2d137bc0e9267 IJ11549s0a.181127.epkg.Z key_w_csum
| 0eea9877dcaf6ffbd6c0d7572fd7ceb6437ef1f0b2f3134a22afc47260e9e7c5 IJ11549s0a.190312.epkg.Z key_w_csum
f18e4f2efd4f488e7a02de90bfa6992b604298dba1d588689d4e58e71b3738db IJ11550s0a.181127.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/xorg_advisory3.asc.sig
https://aix.software.ibm.com/aix/efixes/security/xorg_advisory3.asc.sig
ftp://aix.software.ibm.com/aix/efixes/security/xorg_advisory3.asc.sig
C. FIX AND INTERIM FIX INSTALLATION
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
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.
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
To view previously issued advisories, please visit:
http://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:
ftp://ftp.software.ibm.com/systems/power/AIX/systems_p_os_aix_security_pubkey.txt
Please contact your local IBM AIX support center for any
assistance.
REFERENCES:
Complete CVSS v3 Guide: http://www.first.org/cvss/user-guide
On-line Calculator v3:
http://www.first.org/cvss/calculator/3.0
RELATED INFORMATION:
IBM Secure Engineering Web Portal
http://www.ibm.com/security/secure-engineering/bulletins.html
IBM Product Security Incident Response Blog
https://www.ibm.com/blogs/psirt/
Security Bulletin: Vulnerability in Xorg affects AIX (CVE-2018-14665)
https://www-01.ibm.com/support/docview.wss?uid=ibm10742279
ACKNOWLEDGEMENTS:
None.
CHANGE HISTORY:
First Issued: Tue Dec 11 09:32:52 CST 2018
Updated: Mon Dec 17 08:33:34 CST 2018
Update: Corrected the iFixes listed for AIX 7100-05.
| Updated: Tue Apr 9 09:52:17 CDT 2019
| Update: Added AIX 7100-04-07 and 7200-02-03 as affected.
| Added iFixes for AIX 7100-04-07 and 7200-02-03.
===============================================================================
*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
6.6 Medium
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.032 Low
EPSS
Percentile
91.1%