Category Archives: Ubuntu

Ubuntu

USN-3420-2: Linux kernel (Xenial HWE) vulnerabilities

Ubuntu Security Notice USN-3420-2

18th September, 2017

linux-lts-xenial 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-lts-xenial
    – Linux hardware enablement kernel from Xenial for Trusty

Details

USN-3420-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

It was discovered that a buffer overflow existed in the Bluetooth stack of
the Linux kernel when handling L2CAP configuration responses. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-1000251)

It was discovered that the Flash-Friendly File System (f2fs) implementation
in the Linux kernel did not properly validate superblock metadata. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-10663)

It was discovered that a buffer overflow existed in the ioctl handling code
in the ISDN subsystem of the Linux kernel. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-12762)

Pengfei Wang discovered that a race condition existed in the NXP SAA7164 TV
Decoder driver for the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-8831)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-powerpc-smp-lts-xenial

4.4.0.96.80
linux-image-generic-lpae-lts-xenial

4.4.0.96.80
linux-image-4.4.0-96-powerpc64-emb

4.4.0-96.119~14.04.1
linux-image-4.4.0-96-powerpc-smp

4.4.0-96.119~14.04.1
linux-image-4.4.0-96-lowlatency

4.4.0-96.119~14.04.1
linux-image-lowlatency-lts-xenial

4.4.0.96.80
linux-image-generic-lts-xenial

4.4.0.96.80
linux-image-4.4.0-96-generic

4.4.0-96.119~14.04.1
linux-image-4.4.0-96-generic-lpae

4.4.0-96.119~14.04.1
linux-image-powerpc64-smp-lts-xenial

4.4.0.96.80
linux-image-powerpc64-emb-lts-xenial

4.4.0.96.80
linux-image-4.4.0-96-powerpc-e500mc

4.4.0-96.119~14.04.1
linux-image-powerpc-e500mc-lts-xenial

4.4.0.96.80
linux-image-4.4.0-96-powerpc64-smp

4.4.0-96.119~14.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2017-1000251,

CVE-2017-10663,

CVE-2017-12762,

CVE-2017-8831

Read More

USN-3419-2: Linux kernel (HWE) vulnerabilities

Ubuntu Security Notice USN-3419-2

18th September, 2017

linux-hwe 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-hwe
    – Linux hardware enablement (HWE) kernel

Details

USN-3419-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04.
This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu
16.04 LTS.

It was discovered that a buffer overflow existed in the Bluetooth stack of
the Linux kernel when handling L2CAP configuration responses. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-1000251)

It was discovered that a buffer overflow existed in the Broadcom FullMAC
WLAN driver in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-7541)

Update instructions

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

Ubuntu 16.04 LTS:
linux-image-lowlatency-hwe-16.04

4.10.0.35.37
linux-image-4.10.0-35-generic

4.10.0-35.39~16.04.1
linux-image-4.10.0-35-lowlatency

4.10.0-35.39~16.04.1
linux-image-generic-lpae-hwe-16.04

4.10.0.35.37
linux-image-generic-hwe-16.04

4.10.0.35.37
linux-image-4.10.0-35-generic-lpae

4.10.0-35.39~16.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2017-1000251,

CVE-2017-7541

Read More

USN-3419-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3419-1

18th September, 2017

linux, linux-raspi2 vulnerabilities

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

  • Ubuntu 17.04

Summary

Several security issues were fixed in the Linux kernel.

Software description

  • linux
    – Linux kernel

  • linux-raspi2
    – Linux kernel for Raspberry Pi 2

Details

It was discovered that a buffer overflow existed in the Bluetooth stack of
the Linux kernel when handling L2CAP configuration responses. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-1000251)

It was discovered that a buffer overflow existed in the Broadcom FullMAC
WLAN driver in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2017-7541)

Update instructions

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

Ubuntu 17.04:
linux-image-generic 4.10.0.35.35
linux-image-4.10.0-35-generic

4.10.0-35.39
linux-image-4.10.0-35-lowlatency

4.10.0-35.39
linux-image-4.10.0-35-generic-lpae

4.10.0-35.39
linux-image-generic-lpae 4.10.0.35.35
linux-image-lowlatency 4.10.0.35.35
linux-image-raspi2 4.10.0.1018.19
linux-image-4.10.0-1018-raspi2

4.10.0-1018.21

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2017-1000251,

CVE-2017-7541

Read More

USN-3420-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3420-1

18th September, 2017

linux, linux-aws, linux-gke, linux-kvm, linux-raspi2, linux-snapdragon 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
    – Linux kernel

  • linux-aws
    – Linux kernel for Amazon Web Services (AWS) systems

  • linux-gke
    – Linux kernel for Google Container Engine (GKE) systems

  • linux-kvm
    – Linux kernel for cloud environments

  • linux-raspi2
    – Linux kernel for Raspberry Pi 2

  • linux-snapdragon
    – Linux kernel for Snapdragon processors

Details

It was discovered that a buffer overflow existed in the Bluetooth stack of
the Linux kernel when handling L2CAP configuration responses. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2017-1000251)

It was discovered that the Flash-Friendly File System (f2fs) implementation
in the Linux kernel did not properly validate superblock metadata. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2017-10663)

It was discovered that a buffer overflow existed in the ioctl handling code
in the ISDN subsystem of the Linux kernel. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-12762)

Pengfei Wang discovered that a race condition existed in the NXP SAA7164 TV
Decoder driver for the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2017-8831)

Update instructions

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

Ubuntu 16.04 LTS:
linux-image-powerpc-e500mc 4.4.0.96.101
linux-image-4.4.0-1076-snapdragon

4.4.0-1076.81
linux-image-4.4.0-1031-gke

4.4.0-1031.31
linux-image-4.4.0-96-powerpc-e500mc

4.4.0-96.119
linux-image-4.4.0-96-powerpc64-emb

4.4.0-96.119
linux-image-4.4.0-96-generic-lpae

4.4.0-96.119
linux-image-snapdragon 4.4.0.1076.68
linux-image-4.4.0-96-powerpc64-smp

4.4.0-96.119
linux-image-powerpc64-emb 4.4.0.96.101
linux-image-gke 4.4.0.1031.32
linux-image-generic 4.4.0.96.101
linux-image-4.4.0-96-powerpc-smp

4.4.0-96.119
linux-image-4.4.0-96-lowlatency

4.4.0-96.119
linux-image-4.4.0-96-generic

4.4.0-96.119
linux-image-aws 4.4.0.1035.37
linux-image-kvm 4.4.0.1007.7
linux-image-raspi2 4.4.0.1074.74
linux-image-4.4.0-1074-raspi2

4.4.0-1074.82
linux-image-powerpc-smp 4.4.0.96.101
linux-image-generic-lpae 4.4.0.96.101
linux-image-4.4.0-1035-aws

4.4.0-1035.44
linux-image-4.4.0-1007-kvm

4.4.0-1007.12
linux-image-powerpc64-smp 4.4.0.96.101
linux-image-lowlatency 4.4.0.96.101

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2017-1000251,

CVE-2017-10663,

CVE-2017-12762,

CVE-2017-8831

Read More

USN-3424-1: libxml2 vulnerabilities

Ubuntu Security Notice USN-3424-1

18th September, 2017

libxml2 vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in libxml2.

Software description

  • libxml2
    – GNOME XML library

Details

It was discovered that a type confusion error existed in libxml2. An
attacker could use this to specially construct XML data that
could cause a denial of service or possibly execute arbitrary
code. (CVE-2017-0663)

It was discovered that libxml2 did not properly validate parsed entity
references. An attacker could use this to specially construct XML
data that could expose sensitive information. (CVE-2017-7375)

It was discovered that a buffer overflow existed in libxml2 when
handling HTTP redirects. An attacker could use this to specially
construct XML data that could cause a denial of service or possibly
execute arbitrary code. (CVE-2017-7376)

Marcel Böhme and Van-Thuan Pham discovered a buffer overflow in
libxml2 when handling elements. An attacker could use this to specially
construct XML data that could cause a denial of service or possibly
execute arbitrary code. (CVE-2017-9047)

Marcel Böhme and Van-Thuan Pham discovered a buffer overread
in libxml2 when handling elements. An attacker could use this
to specially construct XML data that could cause a denial of
service. (CVE-2017-9048)

Marcel Böhme and Van-Thuan Pham discovered multiple buffer overreads
in libxml2 when handling parameter-entity references. An attacker
could use these to specially construct XML data that could cause a
denial of service. (CVE-2017-9049, CVE-2017-9050)

Update instructions

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

Ubuntu 17.04:
libxml2

2.9.4+dfsg1-2.2ubuntu0.1
Ubuntu 16.04 LTS:
libxml2

2.9.3+dfsg1-1ubuntu0.3
Ubuntu 14.04 LTS:
libxml2

2.9.1+dfsg1-3ubuntu4.10

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

CVE-2017-0663,

CVE-2017-7375,

CVE-2017-7376,

CVE-2017-9047,

CVE-2017-9048,

CVE-2017-9049,

CVE-2017-9050

Read More

USN-3423-1: Linux kernel vulnerability

Ubuntu Security Notice USN-3423-1

18th September, 2017

linux vulnerability

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

  • Ubuntu 12.04 LTS

Summary

The system could be made to crash if it received specially crafted
bluetooth traffic.

Software description

  • linux
    – Linux kernel

Details

It was discovered that a buffer overflow existed in the Bluetooth stack of
the Linux kernel when handling L2CAP configuration responses. A physically
proximate attacker could use this to cause a denial of service (system
crash).

Update instructions

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

Ubuntu 12.04 LTS:
linux-image-powerpc-smp

3.2.0.131.145
linux-image-3.2.0-131-omap

3.2.0-131.177
linux-image-3.2.0-131-powerpc-smp

3.2.0-131.177
linux-image-generic

3.2.0.131.145
linux-image-3.2.0-131-generic-pae

3.2.0-131.177
linux-image-3.2.0-131-highbank

3.2.0-131.177
linux-image-generic-pae

3.2.0.131.145
linux-image-3.2.0-131-virtual

3.2.0-131.177
linux-image-highbank

3.2.0.131.145
linux-image-virtual

3.2.0.131.145
linux-image-powerpc64-smp

3.2.0.131.145
linux-image-3.2.0-131-generic

3.2.0-131.177
linux-image-omap

3.2.0.131.145
linux-image-3.2.0-131-powerpc64-smp

3.2.0-131.177

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2017-1000251

Read More