Ubuntu Security Notice USN-2871-1

19th January, 2016

linux vulnerability

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

• Ubuntu 15.04

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux
  – Linux kernel

Details

Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.

Update instructions

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

Ubuntu 15.04:

linux-image-3.19.0-47-powerpc-e500mc

3.19.0-47.53

linux-image-3.19.0-47-powerpc64-emb

3.19.0-47.53

linux-image-3.19.0-47-powerpc-smp

3.19.0-47.53

linux-image-3.19.0-47-powerpc64-smp

3.19.0-47.53

linux-image-3.19.0-47-lowlatency

3.19.0-47.53

linux-image-3.19.0-47-generic

3.19.0-47.53

linux-image-3.19.0-47-generic-lpae

3.19.0-47.53

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-2016-0728

Ubuntu Security Notice USN-2871-2

19th January, 2016

linux-lts-vivid vulnerability

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

• Ubuntu 14.04 LTS

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux-lts-vivid
  – Linux hardware enablement kernel from Vivid

Details

Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.19.0-47-powerpc-e500mc

3.19.0-47.53~14.04.1

linux-image-3.19.0-47-powerpc64-emb

3.19.0-47.53~14.04.1

linux-image-3.19.0-47-powerpc-smp

3.19.0-47.53~14.04.1

linux-image-3.19.0-47-powerpc64-smp

3.19.0-47.53~14.04.1

linux-image-3.19.0-47-lowlatency

3.19.0-47.53~14.04.1

linux-image-3.19.0-47-generic

3.19.0-47.53~14.04.1

linux-image-3.19.0-47-generic-lpae

3.19.0-47.53~14.04.1

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-2016-0728

Ubuntu Security Notice USN-2873-1

19th January, 2016

linux-lts-utopic vulnerability

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

• Ubuntu 14.04 LTS

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux-lts-utopic
  – Linux hardware enablement kernel from Utopic

Details

Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.16.0-59-powerpc-e500mc

3.16.0-59.79~14.04.1

linux-image-3.16.0-59-powerpc64-smp

3.16.0-59.79~14.04.1

linux-image-3.16.0-59-generic-lpae

3.16.0-59.79~14.04.1

linux-image-3.16.0-59-powerpc-smp

3.16.0-59.79~14.04.1

linux-image-3.16.0-59-lowlatency

3.16.0-59.79~14.04.1

linux-image-3.16.0-59-powerpc64-emb

3.16.0-59.79~14.04.1

linux-image-3.16.0-59-generic

3.16.0-59.79~14.04.1

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-2016-0728

Ubuntu Security Notice USN-2872-3

19th January, 2016

linux-raspi2 vulnerability

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

• Ubuntu 15.10

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux-raspi2
  – Linux kernel for Raspberry Pi 2

Details

Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.

Update instructions

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

Ubuntu 15.10:

linux-image-4.2.0-1020-raspi2

4.2.0-1020.27

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-2016-0728

Ubuntu Security Notice USN-2872-2

19th January, 2016

linux-lts-wily vulnerability

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

• Ubuntu 14.04 LTS

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux-lts-wily
  – Linux hardware enablement kernel from Wily

Details

Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-4.2.0-25-powerpc64-emb

4.2.0-25.30~14.04.1

linux-image-4.2.0-25-powerpc-smp

4.2.0-25.30~14.04.1

linux-image-4.2.0-25-lowlatency

4.2.0-25.30~14.04.1

linux-image-4.2.0-25-powerpc-e500mc

4.2.0-25.30~14.04.1

linux-image-4.2.0-25-generic-lpae

4.2.0-25.30~14.04.1

linux-image-4.2.0-25-powerpc64-smp

4.2.0-25.30~14.04.1

linux-image-4.2.0-25-generic

4.2.0-25.30~14.04.1

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-2016-0728

Ubuntu Security Notice USN-2874-1

19th January, 2016

bind9 vulnerability

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Bind could be made to crash if it received specially crafted network
traffic.

Software description

• bind9
  – Internet Domain Name Server

Details

It was discovered that Bind incorrectly handled certain APL data. A remote
attacker could possibly use this issue to cause Bind to crash, resulting in
a denial of service.

Update instructions

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

Ubuntu 15.10:

bind9

1:9.9.5.dfsg-11ubuntu1.2

Ubuntu 15.04:

bind9

1:9.9.5.dfsg-9ubuntu0.5

Ubuntu 14.04 LTS:

bind9

1:9.9.5.dfsg-3ubuntu0.7

Ubuntu 12.04 LTS:

bind9

1:9.8.1.dfsg.P1-4ubuntu0.15

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-2015-8704

Ubuntu Security Notice USN-2870-2

19th January, 2016

linux-lts-trusty vulnerability

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

• Ubuntu 12.04 LTS

Summary

The system could be made to crash or run programs as an administrator.

Software description

• linux-lts-trusty
  – Linux hardware enablement kernel from Trusty

Details

Yevgeny Pats discovered that the session keyring implementation in the
Linux kernel did not properly reference count when joining an existing
session keyring. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code with
administrative privileges.

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.13.0-76-generic

3.13.0-76.120~precise1

linux-image-3.13.0-76-generic-lpae

3.13.0-76.120~precise1

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-2016-0728

Ubuntu Security Notice USN-2875-1

19th January, 2016

libxml2 vulnerabilities

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

libxml2 could be made to crash if it opened a specially crafted file.

Software description

• libxml2
  – GNOME XML library

Details

It was discovered that libxml2 incorrectly handled certain malformed
documents. If a user or automated system were tricked into opening a
specially crafted document, an attacker could possibly cause libxml2 to
crash, resulting in a denial of service.

Update instructions

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

Ubuntu 15.10:

libxml2

2.9.2+zdfsg1-4ubuntu0.3

Ubuntu 15.04:

libxml2

2.9.2+dfsg1-3ubuntu0.3

Ubuntu 14.04 LTS:

libxml2

2.9.1+dfsg1-3ubuntu4.7

Ubuntu 12.04 LTS:

libxml2

2.7.8.dfsg-5.1ubuntu4.14

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.

References

CVE-2015-7499,

CVE-2015-8710

Ubuntu Security Notice USN-2869-1

14th January, 2016

openssh vulnerabilities

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

OpenSSH could be made to expose sensitive information over the network.

Software description

• openssh
  – secure shell (SSH) for secure access to remote machines

Details

It was discovered that the OpenSSH client experimental support for resuming
connections contained multiple security issues. A malicious server could
use this issue to leak client memory to the server, including private
client user keys.

Update instructions

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

Ubuntu 15.10:

openssh-client

1:6.9p1-2ubuntu0.1

Ubuntu 15.04:

openssh-client

1:6.7p1-5ubuntu1.4

Ubuntu 14.04 LTS:

openssh-client

1:6.6p1-2ubuntu2.4

Ubuntu 12.04 LTS:

openssh-client

1:5.9p1-5ubuntu1.8

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-2016-0777,

CVE-2016-0778

Ubuntu Security Notice USN-2859-1

13th January, 2016

thunderbird vulnerabilities

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in Thunderbird.

Software description

• thunderbird
  – Mozilla Open Source mail and newsgroup client

Details

Andrei Vaida, Jesse Ruderman, Bob Clary, and Jesse Ruderman
discovered multiple memory safety issues in Thunderbird. If a user were
tricked in to opening a specially crafted message, an attacker could
potentially exploit these to cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Thunderbird. (CVE-2015-7201)

Ronald Crane discovered a buffer overflow through code inspection. If a
user were tricked in to opening a specially crafted website in a browsing
context, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code with the
privileges of the user invoking Thunderbird. (CVE-2015-7205)

Abhishek Arya discovered an integer overflow when allocating large
textures. If a user were tricked in to opening a specially crafted
website in a browsing context, an attacker could potentially exploit this
to cause a denial of service via application crash, or execute arbitrary
code with the privileges of the user invoking Thunderbird. (CVE-2015-7212)

Ronald Crane dicovered an integer overflow when processing MP4 format
video in some circumstances. If a user were tricked in to opening a
specially crafted website in a browsing context, an attacker could
potentially exploit this to cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Thunderbird. (CVE-2015-7213)

Tsubasa Iinuma discovered a way to bypass same-origin restrictions using
data: and view-source: URLs. If a user were tricked in to opening a
specially crafted website in a browsing context, an attacker could
potentially exploit this to obtain sensitive information and read local
files. (CVE-2015-7214)

Update instructions

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

Ubuntu 15.10:

thunderbird

1:38.5.1+build2-0ubuntu0.15.10.1

Ubuntu 15.04:

thunderbird

1:38.5.1+build2-0ubuntu0.15.04.1

Ubuntu 14.04 LTS:

thunderbird

1:38.5.1+build2-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:

thunderbird

1:38.5.1+build2-0ubuntu0.12.04.1

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

After a standard system update you need to restart Thunderbird to make
all the necessary changes.

References

CVE-2015-7201,

CVE-2015-7205,

CVE-2015-7212,

CVE-2015-7213,

CVE-2015-7214