Ubuntu 11.04 USN-1197-3 Moderate: DigiNotar Fraudulent Certificates Threat

ubuntu

September 7, 2011

A certificate authority issued fraudulent certificates.

Summary

A certificate authority issued fraudulent certificates.

Software Description:

- firefox: Mozilla Open Source web browser

- xulrunner-1.9.2: Mozilla Gecko runtime environment

Details:

USN-1197-1 partially addressed an issue with Dutch Certificate Authority

DigiNotar mis-issuing fraudulent certificates. This update actively

distrusts the DigiNotar root certificate as well as several intermediary

certificates. Also included in this list of distrusted certificates are the

Staat der Nederlanden root certificates.

Original advisory details:

It was discovered that Dutch Certificate Authority DigiNotar, had

mis-issued multiple fraudulent certificates. These certificates could allow

an attacker to perform a "man in the middle" (MITM) attack which would make

the user believe their connection is secure, but is actually being

monitored.

For the protection of its users, Mozilla has removed the DigiNotar

certificate. Sites using certificates issued by DigiNo...

Read the Full Advisory

Topics Covered

security advisory Ubuntu Firefox Xulrunner MITM attack fraudulent certificates

Update Instructions

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

Ubuntu 11.04:
  firefox                         6.0.2+build2+nobinonly-0ubuntu0.11.04.1

Ubuntu 10.10:
  firefox                         3.6.22+build2+nobinonly-0ubuntu0.10.10.1
  xulrunner-1.9.2                 1.9.2.22+build2+nobinonly-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
  firefox                         3.6.22+build2+nobinonly-0ubuntu0.10.04.1
  xulrunner-1.9.2                 1.9.2.22+build2+nobinonly-0ubuntu0.10.04.1

After a standard system upgrade you need to restart Firefox and any
applications that use Xulrunner to effect the necessary changes.