Updated Firefox packages has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 17.10

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Ubuntu Security Notice USN-3599-1
March 16, 2018

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

- Ubuntu 17.10
- 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:

An out-of-bounds write was discovered when processing Vorbis audio data.
If a user were tricked in to opening a specially crafted website, an
attacker could exploit this to cause a denial of service, or execute
arbitrary code. (CVE-2018-5146)

Update instructions:

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

Ubuntu 17.10:
firefox 59.0.1+build1-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
firefox 59.0.1+build1-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
firefox 59.0.1+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-3599-1
CVE-2018-5146

Package Information:
https://launchpad.net/ubuntu/+source/firefox/59.0.1+build1-0ubuntu0.17.10.1
https://launchpad.net/ubuntu/+source/firefox/59.0.1+build1-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/59.0.1+build1-0ubuntu0.14.04.1

  Firefox Security Update for Ubuntu