Ubuntu Security Notice USN-2768-1
16th October, 2015
firefox vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Firefox could be made to expose sensitive information across origins
Software description
- firefox
– Mozilla Open Source web browser
Details
Abdulrahman Alqabandi and Ben Kelly discovered that the fetch() API did
not correctly implement the Cross Origin Resource Sharing (CORS)
specification. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to obtain sensitive
information from other origins. (CVE-2015-7184)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.04:
-
firefox
41.0.2+build2-0ubuntu0.15.04.1
- Ubuntu 14.04 LTS:
-
firefox
41.0.2+build2-0ubuntu0.14.04.1
- Ubuntu 12.04 LTS:
-
firefox
41.0.2+build2-0ubuntu0.12.04.1
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.