A Thunderbird security update has been released for Ubuntu Linux 20.04 LTS, 22.04 LTS, and 23.04.

[USN-6405-1] Thunderbird vulnerabilities

==========================================================================

Ubuntu Security Notice USN-6405-1
October 03, 2023

thunderbird vulnerabilities
==========================================================================

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

- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Thunderbird.

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

Details:

Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code. (CVE-2023-4057, CVE-2023-4577,
CVE-2023-4578, CVE-2023-4583, CVE-2023-4585, CVE-2023-5169, CVE-2023-5171,
CVE-2023-5176)

Andrew McCreight discovered that Thunderbird did not properly manage during
the worker lifecycle. An attacker could potentially exploit this issue to
cause a denial of service. (CVE-2023-3600)

Harveer Singh discovered that Thunderbird did not store push notifications
in private browsing mode in encrypted form. An attacker could potentially
exploit this issue to obtain sensitive information. (CVE-2023-4580)

Clément Lecigne discovered that Thunderbird did not properly manage memory
when handling VP8 media stream. An attacker-controlled VP8 media stream
could lead to a heap buffer overflow in the content process, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2023-5217)

Update instructions:

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

Ubuntu 23.04:
thunderbird 1:115.3.1+build1-0ubuntu0.23.04.1

Ubuntu 22.04 LTS:
thunderbird 1:115.3.1+build1-0ubuntu0.22.04.2

Ubuntu 20.04 LTS:
thunderbird 1:115.3.1+build1-0ubuntu0.20.04.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6405-1
CVE-2023-3600, CVE-2023-4057, CVE-2023-4577, CVE-2023-4578,
CVE-2023-4580, CVE-2023-4583, CVE-2023-4585, CVE-2023-5169,
CVE-2023-5171, CVE-2023-5176, CVE-2023-5217

Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/1:115.3.1+build1-0ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:115.3.1+build1-0ubuntu0.22.04.2
https://launchpad.net/ubuntu/+source/thunderbird/1:115.3.1+build1-0ubuntu0.20.04.1