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USN-5724-1: Thunderbird vulnerabilities

11 November 2022

Several security issues were fixed in Thunderbird.

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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,
bypass Content Security Policy (CSP) or other security restrictions, or
execute arbitrary code. These issues only affect Ubuntu 18.04 LTS, Ubuntu
20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-3266, CVE-2022-40956,
CVE-2022-40957, CVE-2022-40958, CVE-2022-40959, CVE-2022-40960,
CVE-2022-40962)

Multiple security issues were discovered in the Matrix SDK bundled with
Thunderbird. An attacker could potentially exploit these in order to
impersonate another user. These issues only affect Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-39236, CVE-2022-39249,
CVE-2022-39250, CVE-2022-39251)

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, or execute arbitrary code. (CVE-2022-42927,
CVE-2022-42928, CVE-2022-42929, CVE-2022-42932)

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 22.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04

After a standard system update you need to restart Thunderbird to make
all the necessary changes.

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