USN-2557-1: Firefox vulnerability

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• firefox - Mozilla Open Source web browser

Details

Muneaki Nishimura discovered a flaw in Mozilla's HTTP Alternative Services
implementation which meant SSL certificate verification could be bypassed
in some circumstances. A remote attacker could potentially exploit this to
conduct a machine-in-the-middle attack. (CVE-2015-0799)

Update instructions

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

Ubuntu 14.10

• firefox - 37.0.1+build1-0ubuntu0.14.10.1

Ubuntu 14.04

• firefox - 37.0.1+build1-0ubuntu0.14.04.1

Ubuntu 12.04

• firefox - 37.0.1+build1-0ubuntu0.12.04.1

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

References

• CVE-2015-0799