1. Ubuntu Security Notices
  2. USN-6563-1

USN-6563-1: Thunderbird vulnerabilities

Publication date

2 January 2024

Overview

Several security issues were fixed in Thunderbird.

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-2023-6857, CVE-2023-6858,
CVE-2023-6859, CVE-2023-6861, CVE-2023-6862, CVE-2023-6863, CVE-2023-6864)

Marcus Brinkmann discovered that Thunderbird did not properly parse a PGP/MIME
payload that contains digitally signed text. An attacker could potentially
exploit this issue to spoof an email message. (

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-2023-6857, CVE-2023-6858,
CVE-2023-6859, CVE-2023-6861, CVE-2023-6862, CVE-2023-6863, CVE-2023-6864)

Marcus Brinkmann discovered that Thunderbird did not properly parse a PGP/MIME
payload that contains digitally signed text. An attacker could potentially
exploit this issue to spoof an email message. (CVE-2023-50762)

Marcus Brinkmann discovered that Thunderbird did not properly compare the
signature creation date with the message date and time when using digitally
signed S/MIME email message. An attacker could potentially exploit this
issue to spoof date and time of an email message. (CVE-2023-50761)

DoHyun Lee discovered that Thunderbird did not properly manage memory when
used on systems with the Mesa VM driver. An attacker could potentially
exploit this issue to execute arbitrary code. (CVE-2023-6856)

Andrew Osmond discovered that Thunderbird did not properly validate the
textures produced by remote decoders. An attacker could potentially exploit
this issue to escape the sandbox. (CVE-2023-6860)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.10 mantic thunderbird –  1:115.6.0+build2-0ubuntu0.23.10.1
23.04 lunar thunderbird –  1:115.6.0+build2-0ubuntu0.23.04.1
22.04 jammy thunderbird –  1:115.6.0+build2-0ubuntu0.22.04.1
20.04 focal thunderbird –  1:115.6.0+build2-0ubuntu0.20.04.1

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References

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