Executive Summary

Summary
Title Thunderbird vulnerability
Informations
Name USN-1197-2 First vendor Publication 2011-09-02
Vendor Ubuntu Last vendor Modification 2011-09-02
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score Not Defined Attack Range Not Defined
Cvss Impact Score Not Defined Attack Complexity Not Defined
Cvss Expoit Score Not Defined Authentication Not Defined
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS

Summary:

A certificate authority issued fraudulent certificates.

Software Description: - thunderbird: Mozilla Open Source mail and newsgroup client

Details:

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.

Update instructions:

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

Ubuntu 11.04:
thunderbird 3.1.13+build1+nobinonly-0ubuntu0.11.04.1

Ubuntu 10.10:
thunderbird 3.1.13+build1+nobinonly-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
thunderbird 3.1.13+build1+nobinonly-0ubuntu0.10.04.1

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

References:
http://www.ubuntu.com/usn/usn-1197-2
http://www.ubuntu.com/usn/usn-1197-1
https://launchpad.net/bugs/837557

Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/3.1.13+build1+nobinonly-0ubuntu0.11.04.1
https://launchpad.net/ubuntu/+source/thunderbird/3.1.13+build1+nobinonly-0ubuntu0.10.10.1
https://launchpad.net/ubuntu/+source/thunderbird/3.1.13+build1+nobinonly-0ubuntu0.10.04.1

Original Source

Url : http://www.ubuntu.com/usn/USN-1197-2

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Date Informations
2014-02-17 11:58:55
  • Multiple Updates