USN-2768-1: Firefox vulnerability

Releases

• Ubuntu 15.04
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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 versions:

Ubuntu 15.04

• firefox - 41.0.2+build2-0ubuntu0.15.04.1

Ubuntu 14.04

• firefox - 41.0.2+build2-0ubuntu0.14.04.1

Ubuntu 12.04

• firefox - 41.0.2+build2-0ubuntu0.12.04.1

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

References

• CVE-2015-7184