The following security updates has been released for Ubuntu Linux:

USN-3760-1: transfig vulnerability
USN-3761-1: Firefox vulnerabilities

USN-3760-1: transfig vulnerability

==========================================================================
Ubuntu Security Notice USN-3760-1
September 06, 2018

transfig vulnerability
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

transfig could be made to execute arbitrary code if it received a
specially crafted FIG file.

Software Description:
- transfig: Utilities for converting XFig figure files

Details:

It was discovered that transfig incorrectly handled certain FIG 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 16.04 LTS:
  transfig 1:3.2.5.e-5ubuntu0.1

Ubuntu 14.04 LTS:
  transfig 1:3.2.5.e-1ubuntu1.1

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

References:
  https://usn.ubuntu.com/usn/usn-3760-1
  CVE-2018-16140

Package Information:
  https://launchpad.net/ubuntu/+source/transfig/1:3.2.5.e-5ubuntu0.1
  https://launchpad.net/ubuntu/+source/transfig/1:3.2.5.e-1ubuntu1.1

USN-3761-1: Firefox vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3761-1
September 06, 2018

firefox vulnerabilities
==========================================================================

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

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

Summary:

Firefox could be made to crash or run programs as your login if it
opened a malicious website.

Software Description:
- firefox: Mozilla Open Source web browser

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, or execute
arbitrary code. (CVE-2018-12375, CVE-2018-12376, CVE-2018-12377,
CVE-2018-12378)

It was discovered that if a user saved passwords before Firefox 58 and
then later set a master password, an unencrypted copy of these passwords
would still be accessible. A local user could exploit this to obtain
sensitive information. (CVE-2018-12383)

Update instructions:

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

Ubuntu 18.04 LTS:
firefox 62.0+build2-0ubuntu0.18.04.3

Ubuntu 16.04 LTS:
firefox 62.0+build2-0ubuntu0.16.04.3

Ubuntu 14.04 LTS:
firefox 62.0+build2-0ubuntu0.14.04.3

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

References:
https://usn.ubuntu.com/usn/usn-3761-1
CVE-2018-12375, CVE-2018-12376, CVE-2018-12377, CVE-2018-12378,
CVE-2018-12383

Package Information:
https://launchpad.net/ubuntu/+source/firefox/62.0+build2-0ubuntu0.18.04.3
https://launchpad.net/ubuntu/+source/firefox/62.0+build2-0ubuntu0.16.04.3
https://launchpad.net/ubuntu/+source/firefox/62.0+build2-0ubuntu0.14.04.3