USN-1197-2 : thunderbird vulnerability

NASLDB: USN-1197-2 : thunderbird vulnerability

General

ID: 56089
Name: USN-1197-2 : thunderbird vulnerability

Summary: Checks dpkg output for updated package(s)

Credits: –

Classification

Risk: –

CVSS: –
CVSS Base Vector: –
CVSS Temporal Vector: –

Port: 0
Family: Ubuntu Local Security Checks
Type: Local

Description

USN-1197-1 fixed a vulnerability in Firefox with regard to the
DigiNotar certificate authority. This update provides the
corresponding updates for Thunderbird.

We are aware that the DigiNotar Root CA Certificate is still shown as
trusted in the Thunderbird certificate manager. This is due to
Thunderbird using the system version of the Network Security Service
libraries (NSS). Thunderbird will actively distrust any certificate
signed by this DigiNotar Root CA certificate. This means that users
will still get an untrusted certificate warning when accessing a
service through Thunderbird that presents a certificate signed by
this DigiNotar Root CA certificate.

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 DigiNotar will need
to seek another certificate vendor.

We are currently aware of a regression that blocks one of two Staat
der Nederlanden root certificates which are believed to still be
secure. This regression is being tracked at
https://launchpad.net/bugs/838322.