ESB-2018.3576 - [Ubuntu] kernel: Multiple vulnerabilities 2018-11-15

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

                               ESB-2018.3576
                       Linux kernel vulnerabilities
                             15 November 2018

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

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

Product:           linux
                   linux-aws
                   linux-azure
                   linux-gcp
                   linux-kvm
                   linux-oem
                   linux-raspi2
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Root Compromise        -- Existing Account
                   Access Privileged Data -- Existing Account
                   Denial of Service      -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-16658 CVE-2018-15471 CVE-2018-9363
                   CVE-2017-13168  

Reference:         ESB-2018.3036
                   ESB-2018.2940
                   ESB-2018.2698
                   ESB-2018.2547

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3820-1
   http://www.ubuntu.com/usn/usn-3820-2
   http://www.ubuntu.com/usn/usn-3820-3

Comment: This bulletin contains three (3) Ubuntu security advisories.

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

==========================================================================
Ubuntu Security Notice USN-3820-1
November 14, 2018

linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- - linux: Linux kernel
- - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- - linux-azure: Linux kernel for Microsoft Azure Cloud systems
- - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- - linux-kvm: Linux kernel for cloud environments
- - linux-oem: Linux kernel for OEM processors
- - linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

Felix Wilhelm discovered that the Xen netback driver in the Linux kernel
did not properly perform input validation in some situations. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-15471)

It was discovered that the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
privileges. (CVE-2017-13168)

It was discovered that an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)

It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)

Update instructions:

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

Ubuntu 18.04 LTS:
  linux-image-4.15.0-1024-gcp     4.15.0-1024.25
  linux-image-4.15.0-1026-kvm     4.15.0-1026.26
  linux-image-4.15.0-1026-oem     4.15.0-1026.31
  linux-image-4.15.0-1027-aws     4.15.0-1027.27
  linux-image-4.15.0-1028-raspi2  4.15.0-1028.30
  linux-image-4.15.0-1031-azure   4.15.0-1031.32
  linux-image-4.15.0-39-generic   4.15.0-39.42
  linux-image-4.15.0-39-generic-lpae  4.15.0-39.42
  linux-image-4.15.0-39-lowlatency  4.15.0-39.42
  linux-image-4.15.0-39-snapdragon  4.15.0-39.42
  linux-image-aws                 4.15.0.1027.27
  linux-image-azure               4.15.0.1031.31
  linux-image-gcp                 4.15.0.1024.26
  linux-image-generic             4.15.0.39.41
  linux-image-generic-lpae        4.15.0.39.41
  linux-image-gke                 4.15.0.1024.26
  linux-image-kvm                 4.15.0.1026.26
  linux-image-lowlatency          4.15.0.39.41
  linux-image-oem                 4.15.0.1026.31
  linux-image-raspi2              4.15.0.1028.26
  linux-image-snapdragon          4.15.0.39.41

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
  https://usn.ubuntu.com/usn/usn-3820-1
  CVE-2017-13168, CVE-2018-15471, CVE-2018-16658, CVE-2018-9363

Package Information:
  https://launchpad.net/ubuntu/+source/linux/4.15.0-39.42
  https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1027.27
  https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1031.32
  https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1024.25
  https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1026.26
  https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1026.31
  https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1028.30

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- --------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3820-2
November 14, 2018

linux-hwe, linux-azure, linux-gcp vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- - linux-azure: Linux kernel for Microsoft Azure Cloud systems
- - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- - linux-hwe: Linux hardware enablement (HWE) kernel

Details:

USN-3820-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu
16.04 LTS.

Felix Wilhelm discovered that the Xen netback driver in the Linux kernel
did not properly perform input validation in some situations. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-15471)

It was discovered that the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
privileges. (CVE-2017-13168)

It was discovered that an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)

It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)

Update instructions:

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

Ubuntu 16.04 LTS:
  linux-image-4.15.0-1024-gcp     4.15.0-1024.25~16.04.2
  linux-image-4.15.0-1031-azure   4.15.0-1031.32~16.04.1
  linux-image-4.15.0-39-generic   4.15.0-39.42~16.04.1
  linux-image-4.15.0-39-generic-lpae  4.15.0-39.42~16.04.1
  linux-image-4.15.0-39-lowlatency  4.15.0-39.42~16.04.1
  linux-image-azure               4.15.0.1031.36
  linux-image-gcp                 4.15.0.1024.38
  linux-image-generic-hwe-16.04   4.15.0.39.62
  linux-image-generic-lpae-hwe-16.04  4.15.0.39.62
  linux-image-gke                 4.15.0.1024.38
  linux-image-lowlatency-hwe-16.04  4.15.0.39.62
  linux-image-oem                 4.15.0.39.62

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
  https://usn.ubuntu.com/usn/usn-3820-2
  https://usn.ubuntu.com/usn/usn-3820-1
  CVE-2017-13168, CVE-2018-15471, CVE-2018-16658, CVE-2018-9363

Package Information:
  https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1031.32~16.04.1
  https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1024.25~16.04.2
  https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-39.42~16.04.1

- --------------------------------------------------------------------------------

==========================================================================
Ubuntu Security Notice USN-3820-3
November 14, 2018

linux-azure vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- - linux-azure: Linux kernel for Microsoft Azure Cloud systems

Details:

Felix Wilhelm discovered that the Xen netback driver in the Linux kernel
did not properly perform input validation in some situations. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2018-15471)

It was discovered that the generic SCSI driver in the Linux kernel did not
properly enforce permissions on kernel memory access. A local attacker
could use this to expose sensitive information or possibly elevate
privileges. (CVE-2017-13168)

It was discovered that an integer overflow existed in the CD-ROM driver of
the Linux kernel. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2018-16658)

It was discovered that an integer overflow existed in the HID Bluetooth
implementation in the Linux kernel that could lead to a buffer overwrite.
An attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2018-9363)

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-4.15.0-1031-azure   4.15.0-1031.32~14.04.1+signed1
  linux-image-azure               4.15.0.1031.18

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
  https://usn.ubuntu.com/usn/usn-3820-3
  https://usn.ubuntu.com/usn/usn-3820-1
  CVE-2017-13168, CVE-2018-15471, CVE-2018-16658, CVE-2018-9363

Package Information:
  https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1031.32~14.04.1

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

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