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

[USN-6333-1] Thunderbird vulnerabilities

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Ubuntu Security Notice USN-6333-1
September 04, 2023

thunderbird vulnerabilities
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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:

Junsung Lee discovered that Thunderbird did not properly validate the text
direction override unicode character in filenames. An attacker could
potentially exploits this issue by spoofing file extension while attaching
a file in emails. (CVE-2023-3417)

Max Vlasov discovered that Thunderbird Offscreen Canvas did not properly
track cross-origin tainting. An attacker could potentially exploit this
issue to access image data from another site in violation of same-origin
policy. (CVE-2023-4045)

Alexander Guryanov discovered that Thunderbird did not properly update the
value of a global variable in WASM JIT analysis in some circumstances. An
attacker could potentially exploit this issue to cause a denial of service.
(CVE-2023-4046)

Mark Brand discovered that Thunderbird did not properly validate the size
of an untrusted input stream. An attacker could potentially exploit this
issue to cause a denial of service. (CVE-2023-4050)

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-2023-4047, CVE-2023-4048,
CVE-2023-4049, CVE-2023-4055, CVE-2023-4056)

Update instructions:

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

Ubuntu 23.04:
thunderbird 1:102.15.0+build1-0ubuntu0.23.04.1

Ubuntu 22.04 LTS:
thunderbird 1:102.15.0+build1-0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
thunderbird 1:102.15.0+build1-0ubuntu0.20.04.1

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

References:
https://ubuntu.com/security/notices/USN-6333-1
CVE-2023-3417, CVE-2023-4045, CVE-2023-4046, CVE-2023-4047,
CVE-2023-4048, CVE-2023-4049, CVE-2023-4050, CVE-2023-4055,
CVE-2023-4056

Package Information:
https://launchpad.net/ubuntu/+source/thunderbird/1:102.15.0+build1-0ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:102.15.0+build1-0ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:102.15.0+build1-0ubuntu0.20.04.1