Ubuntu Security Notice USN-2893-1
11th February, 2016
firefox vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
A same-origin-policy bypass was discovered in Firefox.
Software description
- firefox
- Mozilla Open Source web browser
Details
Jason Pang discovered that service workers intercept responses to plugin
network requests made through the browser. An attacker could potentially
exploit this to bypass same origin restrictions using the Flash plugin.
(CVE-2016-1949)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
firefox
44.0.2+build1-0ubuntu0.15.10.1
- Ubuntu 14.04 LTS:
firefox
44.0.2+build1-0ubuntu0.14.04.1
- Ubuntu 12.04 LTS:
firefox
44.0.2+build1-0ubuntu0.12.04.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Firefox to make
all the necessary changes.