1. Ubuntu Security Notices
  2. USN-6515-1

USN-6515-1: Thunderbird vulnerabilities

Publication date

27 November 2023

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-2023-6206, CVE-2023-6212)

It was discovered that Thudnerbird did not properly manage memory when
images were created on the canvas element. An attacker could potentially
exploit this issue to obtain sensitive information. (CVE-2023-6204)

It discovered that Thunderbird incorrectly handled certain memory when
using a MessagePort. An attacker could potentially exploit this issue to
cause a denial of service. (CVE-2023-6205)

It discovered that Thunderbird...

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-2023-6206, CVE-2023-6212)

It was discovered that Thudnerbird did not properly manage memory when
images were created on the canvas element. An attacker could potentially
exploit this issue to obtain sensitive information. (CVE-2023-6204)

It discovered that Thunderbird incorrectly handled certain memory when
using a MessagePort. An attacker could potentially exploit this issue to
cause a denial of service. (CVE-2023-6205)

It discovered that Thunderbird incorrectly did not properly manage ownership
in ReadableByteStreams. An attacker could potentially exploit this issue
to cause a denial of service. (CVE-2023-6207)

It discovered that Thudnerbird incorrectly did not properly manage copy
operations when using Selection API in X11. An attacker could potentially
exploit this issue to obtain sensitive information. (CVE-2023-6208)

Rachmat Abdul Rokhim discovered that Thunderbird incorrectly handled
parsing of relative URLS starting with ”///”. An attacker could potentially
exploit this issue to cause a denial of service. (CVE-2023-6209)

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 –  1:115.5.0+build1-0ubuntu0.23.10.1
23.04 lunar thunderbird –  1:115.5.0+build1-0ubuntu0.23.04.1
22.04 jammy thunderbird –  1:115.5.0+build1-0ubuntu0.22.04.1
20.04 focal thunderbird –  1:115.5.0+build1-0ubuntu0.20.04.1

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References

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