USN-3140-1: Firefox vulnerabilities

Ubuntu Security Notice USN-3140-1

30th November, 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

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

It was discovered that data: URLs can inherit the wrong origin after a
HTTP redirect in some circumstances. An attacker could potentially
exploit this to bypass same-origin restrictions. (CVE-2016-9078)

A use-after-free was discovered in SVG animations. If a user were tricked
in to opening a specially crafted website, an attacker could exploit this
to cause a denial of service via application crash, or execute arbitrary
code. (CVE-2016-9079)

Update instructions

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

Ubuntu 16.10:

firefox 50.0.2+build1-0ubuntu0.16.10.1

Ubuntu 16.04 LTS:

firefox 50.0.2+build1-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:

firefox 50.0.2+build1-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:

firefox 50.0.2+build1-0ubuntu0.12.04.1

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2016-9078, CVE-2016-9079

from Ubuntu Security Notices http://ift.tt/2gmkAdT