[USN-5345-1] Thunderbird vulnerabilities


========================================================================== Ubuntu Security Notice USN-5345-1 March 23, 2022
thunderbird vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – 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, bypass security restrictions, obtain sensitive information, cause undefined behaviour, spoof the browser UI, or execute arbitrary code. (CVE-2022-22759, CVE-2022-22760, CVE-2022-22761, CVE-2022-22763, CVE-2022-22764, CVE-2022-26381, CVE-2022-26383, CVE-2022-26384)
It was discovered that extensions of a particular type could auto-update themselves and bypass the prompt that requests permissions. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to bypass security restrictions. (CVE-2022-22754)
It was discovered that dragging and dropping an image into a folder could result in it being marked as executable. If a user were tricked into dragging and dropping a specially crafted image, an attacker could potentially exploit this to execute arbitrary code. (CVE-2022-22756)
It was discovered that files downloaded to /tmp were accessible to other users. A local attacker could exploit this to obtain sensitive information. (CVE-2022-26386)
A TOCTOU bug was discovered when verifying addon signatures during install. A local attacker could potentially exploit this to trick a user into installing an addon with an invalid signature. (CVE-2022-26387)
An out-of-bounds write by one byte was discovered when processing messages in some circumstances. If a user were tricked into opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service. (CVE-2022-0566)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: thunderbird 1:91.7.0+build2-0ubuntu0.21.10.1
Ubuntu 20.04 LTS: thunderbird 1:91.7.0+build2-0ubuntu0.20.04.1
Ubuntu 18.04 LTS: thunderbird 1:91.7.0+build2-0ubuntu0.18.04.1
After a standard system update you need to restart Thunderbird to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5345-1 CVE-2022-0566, CVE-2022-22754, CVE-2022-22756, CVE-2022-22759, CVE-2022-22760, CVE-2022-22761, CVE-2022-22763, CVE-2022-22764, CVE-2022-26381, CVE-2022-26383, CVE-2022-26384, CVE-2022-26386, CVE-2022-26387
Package Information: launchpad.net/ubuntu/+source/thunderbird/1:91.7.0+build2-0ubuntu0.21.10.1 launchpad.net/ubuntu/+source/thunderbird/1:91.7.0+build2-0ubuntu0.20.04.1 launchpad.net/ubuntu/+source/thunderbird/1:91.7.0+build2-0ubuntu0.18.04.1