The following updates has been released for Ubuntu Linux:

USN-3705-2: Firefox regressions
USN-3706-2: libjpeg-turbo vulnerabilities
USN-3709-1: Xapian-core vulnerability

USN-3705-2: Firefox regressions

==========================================================================
Ubuntu Security Notice USN-3705-2
July 10, 2018

firefox regressions
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

USN-3705-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-3705-1 fixed vulnerabilities in Firefox. The update introduced various
minor regressions. This update fixes the problems.

We apologize for the inconvenience.

Original advisory details:

Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, read uninitialized
memory, bypass same-origin restrictions, bypass CORS restrictions,
bypass CSRF protections, obtain sensitive information, or execute
arbitrary code. (CVE-2018-5156, CVE-2018-5186, CVE-2018-5187,
CVE-2018-5188, CVE-2018-12358, CVE-2018-12359, CVE-2018-12360,
CVE-2018-12361, CVE-2018-12362, CVE-2018-12363, CVE-2018-12364,
CVE-2018-12365, CVE-2018-12366, CVE-2018-12367, CVE-2018-12370,
CVE-2018-12371)

A security issue was discovered with WebExtensions. If a user were
tricked in to installing a specially crafted extension, an attacker
could potentially exploit this to obtain full browser permissions.
(CVE-2018-12369)

Update instructions:

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

Ubuntu 18.04 LTS:
firefox 61.0.1+build1-0ubuntu0.18.04.1

Ubuntu 17.10:
firefox 61.0.1+build1-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
firefox 61.0.1+build1-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
firefox 61.0.1+build1-0ubuntu0.14.04.1

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

References:
https://usn.ubuntu.com/usn/usn-3705-2
https://usn.ubuntu.com/usn/usn-3705-1
https://launchpad.net/bugs/1781009

Package Information:
https://launchpad.net/ubuntu/+source/firefox/61.0.1+build1-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/61.0.1+build1-0ubuntu0.17.10.1
https://launchpad.net/ubuntu/+source/firefox/61.0.1+build1-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/61.0.1+build1-0ubuntu0.14.04.1

USN-3706-2: libjpeg-turbo vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3706-2
July 10, 2018

libjpeg-turbo vulnerabilities
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

libjpeg-turbo could be made to crash or run programs as your login if
it opened a specially crafted file.

Software Description:
- libjpeg-turbo: library for handling JPEG files

Details:

USN-3706-1 fixed a vulnerability in libjpeg-turbo. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that libjpeg-turbo incorrectly handled certain
 malformed JPEG images. If a user or automated system were tricked into
 opening a specially crafted JPEG image, a remote attacker could cause
 libjpeg-turbo to crash, resulting in a denial of service, or possibly
 execute arbitrary code.

Update instructions:

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

Ubuntu 12.04 ESM:
  libjpeg-turbo8 1.1.90+svn733-0ubuntu4.5

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

References:
  https://usn.ubuntu.com/usn/usn-3706-2
  https://usn.ubuntu.com/usn/usn-3706-1
  CVE-2014-9092, CVE-2016-3616, CVE-2018-11212, CVE-2018-11213,
  CVE-2018-11214, CVE-2018-1152

USN-3709-1: Xapian-core vulnerability

==========================================================================
Ubuntu Security Notice USN-3709-1
July 10, 2018

xapian-core vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10

Summary:

Xapian-core could be made to execute arbitrary code if it
received a specially crafted file.

Software Description:
- xapian-core: Development files for Xapian search engine library

Details:

It was discovered that Xapian-core incorrectly handled certain files.
An attacker could possibly use this to execute arbitrary code.

Update instructions:

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

Ubuntu 18.04 LTS:
  libxapian30 1.4.5-1ubuntu0.1
  xapian-tools 1.4.5-1ubuntu0.1

Ubuntu 17.10:
  libxapian30 1.4.4-2ubuntu0.1
  xapian-tools 1.4.4-2ubuntu0.1

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

References:
  https://usn.ubuntu.com/usn/usn-3709-1
  CVE-2018-0499

Package Information:
  https://launchpad.net/ubuntu/+source/xapian-core/1.4.5-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/xapian-core/1.4.4-2ubuntu0.1