A Thunderbird security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

USN-6015-1: Thunderbird vulnerabilities

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Ubuntu Security Notice USN-6015-1
April 13, 2023

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

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 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-2023-1945, CVE-2023-29548,
CVE-2023-29550)

Paul Menzel discovered that Thunderbird did not properly validate OCSP
revocation status of recipient certificates when sending S/Mime encrypted
email. An attacker could potentially exploits this issue to perform
spoofing attack. (CVE-2023-0547)

Ribose RNP Team discovered that Thunderbird did not properly manage memory
when parsing certain OpenPGP messages. An attacker could potentially
exploits this issue to cause a denial of service. (CVE-2023-29479)

Irvan Kurniawan discovered that Thunderbird did not properly manage
fullscreen notifications using a combination of window.open, fullscreen
requests, window.name assignments, and setInterval calls. An attacker could
potentially exploit this issue to perform spoofing attacks.
(CVE-2023-29533)

Lukas Bernhard discovered that Thunderbird did not properly manage memory
when doing Garbage Collector compaction. An attacker could potentially
exploits this issue to cause a denial of service. (CVE-2023-29535)

Zx from qriousec discovered that Thunderbird did not properly validate the
address to free a pointer provided to the memory manager. An attacker could
potentially exploits this issue to cause a denial of service.
(CVE-2023-29536)

Trung Pham discovered that Thunderbird did not properly validate the
filename directive in the Content-Disposition header. An attacker could
possibly exploit this to perform reflected file download attacks
potentially tricking users to install malware. (CVE-2023-29539)

Ameen Basha M K discovered that Thunderbird did not properly validate
downloads of files ending in .desktop. An attacker could potentially
exploits this issue to execute arbitrary code. (CVE-2023-29541)

Update instructions:

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

Ubuntu 22.10:
thunderbird 1:102.10.0+build2-0ubuntu0.22.10.1

Ubuntu 22.04 LTS:
thunderbird 1:102.10.0+build2-0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
thunderbird 1:102.10.0+build2-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
thunderbird 1:102.10.0+build2-0ubuntu0.18.04.1

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

References:
  https://ubuntu.com/security/notices/USN-6015-1
CVE-2023-0547, CVE-2023-1945, CVE-2023-29479, CVE-2023-29533,
CVE-2023-29535, CVE-2023-29536, CVE-2023-29539, CVE-2023-29541,
CVE-2023-29548, CVE-2023-29550

Package Information:
  https://launchpad.net/ubuntu/+source/thunderbird/1:102.10.0+build2-0ubuntu0.22.10.1
  https://launchpad.net/ubuntu/+source/thunderbird/1:102.10.0+build2-0ubuntu0.22.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/1:102.10.0+build2-0ubuntu0.20.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/1:102.10.0+build2-0ubuntu0.18.04.1