==========================================================================
Ubuntu Security Notice USN-3111-1
October 27, 2016

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

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

– Ubuntu 16.10
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Firefox.

Software Description:
– firefox: Mozilla Open Source web browser

Details:

A use-after-free was discovered in service workers. If a user were tricked
in to opening a specially crafted website, an attacker could potentially
exploit this to cause a denial of service via program crash, or execute
arbitrary code. (CVE-2016-5287)

It was discovered that web content could access information in the HTTP
cache in some circumstances. An attacker could potentially exploit this
to obtain sensitive information. (CVE-2016-5288)

Update instructions:

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

Ubuntu 16.10:
firefox 49.0.2+build2-0ubuntu0.16.10.2

Ubuntu 16.04 LTS:
firefox 49.0.2+build2-0ubuntu0.16.04.2

Ubuntu 14.04 LTS:
firefox 49.0.2+build2-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
firefox 49.0.2+build2-0ubuntu0.12.04.1

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

References:
http://www.ubuntu.com/usn/usn-3111-1
CVE-2016-5287, CVE-2016-5288

Package Information:
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.16.10.2
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/firefox/49.0.2+build2-0ubuntu0.12.04.1

—–BEGIN PGP SIGNATURE—–
Version: GnuPG v2

iQEcBAEBCAAGBQJYEnOLAAoJEGEfvezVlG4PgvcH/iEeiAz1oavDsBb2+8Dk2MjS
9JGma85LigsgTyF7KRAxx1KJgZ0FLHti3wBd2jcgOCvTyCJEn8KZSgVCcDrsjLXP
J6nRv0T6gMVHDGwz8sxA0Fc9zGKud22AEQucGKsuWNonHcMtg9oF27iZmeoP9j2a
DHuPhI3+14C77Hi1MZt70RiE7EqmYNDXSmiiXVkxnp2Lgzz63+Qx+p01dF7ZiHHZ
AHElBs7cpOiqVwpffEtxb669SIqcYKoId56RwzP9+M8hR7swVru0Xh/GFXDnbBdm
qyzRQLaDELFqHBdTn57x5CZWXL/Lrym1iDc5xu9WxYzCSq5AL4X9pESJD5TjHn4=
=zIUh
—–END PGP SIGNATURE—–
—