ESB-2017.2076 - [Ubuntu] Linux kernel: Multiple vulnerabilities 2017-08-18

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2076
               Kernel Live Patch Security Notice LSN-0028-1
                              18 August 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:          Linux kernel
Publisher:        Ubuntu
Operating System: Ubuntu
Impact/Access:    Execute Arbitrary Code/Commands -- Existing Account
                  Denial of Service               -- Existing Account
Resolution:       Patch/Upgrade
CVE Names:        CVE-2017-1000112 CVE-2017-1000111 

Reference:        ESB-2017.2019
                  ESB-2017.2006

- --------------------------BEGIN INCLUDED TEXT--------------------

==========================================================================
Kernel Live Patch Security Notice LSN-0028-1
August 15, 2017

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu:

| Series           | Base kernel  | Arch     | flavors          |
|------------------+--------------+----------+------------------|
| Ubuntu 16.04 LTS | 4.4.0        | amd64    | generic          |
| Ubuntu 16.04 LTS | 4.4.0        | amd64    | lowlatency       |
| Ubuntu 14.04 LTS | 4.4.0        | amd64    | generic          |
| Ubuntu 14.04 LTS | 4.4.0        | amd64    | lowlatency       |

Summary:

Several security issues were fixed in the kernel.

Software Description:
- - linux: Linux kernel

Details:

Andrey Konovalov discovered a race condition in the UDP Fragmentation
Offload (UFO) code in the Linux kernel. A local attacker could use this to
cause a denial of service or execute arbitrary code. (CVE-2017-1000112)

Andrey Konovalov discovered a race condition in AF_PACKET socket option
handling code in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2017-1000111)

Update instructions:

The problem can be corrected by updating your livepatches to the following
versions:

| Kernel          | Version  | flavors                  |
|-----------------+----------+--------------------------|
| 4.4.0-21.37     | 28.2     | generic, lowlatency      |
| 4.4.0-22.39     | 28.2     | generic, lowlatency      |
| 4.4.0-22.40     | 28.2     | generic, lowlatency      |
| 4.4.0-24.43     | 28.2     | generic, lowlatency      |
| 4.4.0-28.47     | 28.2     | generic, lowlatency      |
| 4.4.0-31.50     | 28.2     | generic, lowlatency      |
| 4.4.0-34.53     | 28.2     | generic, lowlatency      |
| 4.4.0-36.55     | 28.2     | generic, lowlatency      |
| 4.4.0-38.57     | 28.2     | generic, lowlatency      |
| 4.4.0-42.62     | 28.2     | generic, lowlatency      |
| 4.4.0-43.63     | 28.2     | generic, lowlatency      |
| 4.4.0-45.66     | 28.2     | generic, lowlatency      |
| 4.4.0-47.68     | 28.2     | generic, lowlatency      |
| 4.4.0-51.72     | 28.2     | generic, lowlatency      |
| 4.4.0-53.74     | 28.2     | generic, lowlatency      |
| 4.4.0-57.78     | 28.2     | generic, lowlatency      |
| 4.4.0-59.80     | 28.2     | generic, lowlatency      |
| 4.4.0-62.83     | 28.2     | generic, lowlatency      |
| 4.4.0-63.84     | 28.2     | generic, lowlatency      |
| 4.4.0-64.85     | 28.2     | generic, lowlatency      |
| 4.4.0-66.87     | 28.2     | generic, lowlatency      |
| 4.4.0-67.88     | 28.2     | generic, lowlatency      |
| 4.4.0-70.91     | 28.2     | generic, lowlatency      |
| 4.4.0-71.92     | 28.2     | generic, lowlatency      |
| 4.4.0-72.93     | 28.2     | generic, lowlatency      |
| 4.4.0-75.96     | 28.2     | generic, lowlatency      |
| 4.4.0-77.98     | 28.2     | generic, lowlatency      |
| 4.4.0-78.99     | 28.2     | generic, lowlatency      |
| 4.4.0-79.100    | 28.2     | generic, lowlatency      |
| 4.4.0-81.104    | 28.2     | generic, lowlatency      |
| 4.4.0-83.106    | 28.2     | generic, lowlatency      |
| 4.4.0-87.110    | 28.2     | generic, lowlatency      |
| 4.4.0-89.112    | 28.2     | generic, lowlatency      |
| lts-4.4.0-21.37_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-22.39_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-22.40_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-24.43_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-28.47_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-31.50_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-34.53_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-36.55_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-38.57_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-42.62_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-45.66_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-47.68_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-51.72_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-53.74_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-57.78_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-59.80_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-62.83_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-63.84_14.04.2-lts-xenial | 14.04.2  | generic, lowlatency      |
| lts-4.4.0-64.85_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-66.87_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-70.91_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-71.92_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-72.93_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-75.96_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-78.99_14.04.2-lts-xenial | 14.04.2  | generic, lowlatency      |
| lts-4.4.0-79.100_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-81.104_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |
| lts-4.4.0-87.110_14.04.1-lts-xenial | 14.04.1  | generic, lowlatency      |

Additionally, you should install an updated kernel with these fixes and
reboot at your convienience.

References:
  CVE-2017-1000111, CVE-2017-1000112

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=aEq6
-----END PGP SIGNATURE-----

« Back to bulletins