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USN-6405-1: Thunderbird vulnerabilities

3 October 2023

Several security issues were fixed in Thunderbird.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Releases

Packages

  • 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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04

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

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