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Ubuntu 11.04 USN-1197-2 Moderate: Thunderbird Certificate Problem

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Calendar Grey September 2, 2011
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Ensure your Ubuntu system is updated to address the Thunderbird vulnerability resulting from a certificate authority distributing counterfeit certificates.
A certificate authority issued fraudulent certificates.

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 certifica...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory moderate ubuntu thunderbird certificate issue

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

https://ubuntu.com/security/notices/USN-1197-2

https://ubuntu.com/security/notices/USN-1197-1

https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/837557

Severity
important
Lowest
Low
Medium
High
Critical

September 02, 2011

Topics%20covered

Topics Covered

security advisory moderate ubuntu thunderbird certificate issue

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

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