Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-6515-1: Thunderbird vulnerabilities

27 November 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.

Learn more about Ubuntu Pro

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 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)

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 23.10
Ubuntu 23.04
Ubuntu 22.04
Ubuntu 20.04

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

Related notices

  • USN-6509-1: firefox-locale-ia, firefox-locale-sl, firefox-locale-hi, firefox-locale-pa, firefox-locale-nl, firefox-locale-ur, firefox-locale-mai, firefox-locale-en, firefox-locale-fr, firefox-locale-es, firefox-locale-ne, firefox-locale-lv, firefox-locale-oc, firefox-locale-sk, firefox-locale-br, firefox-locale-ko, firefox-locale-te, firefox-locale-kn, firefox-locale-hu, firefox-locale-ast, firefox-locale-km, firefox-locale-eu, firefox-locale-cs, firefox-locale-af, firefox-locale-zh-hant, firefox-locale-sw, firefox-locale-fa, firefox-locale-de, firefox-locale-th, firefox-locale-pl, firefox-locale-sv, firefox-locale-it, firefox-locale-xh, firefox-locale-gd, firefox-locale-szl, firefox-locale-eo, firefox-locale-et, firefox-locale-zh-hans, firefox-locale-zu, firefox-locale-pt, firefox-locale-uk, firefox-locale-ta, firefox-locale-ka, firefox-locale-ro, firefox-locale-nso, firefox-locale-fi, firefox-locale-bs, firefox-locale-gl, firefox-locale-hy, firefox-locale-mn, firefox-locale-kk, firefox-locale-ca, firefox-geckodriver, firefox-locale-kab, firefox-locale-sq, firefox-locale-sr, firefox-locale-lg, firefox-locale-hsb, firefox-locale-lt, firefox-locale-ar, firefox-locale-mk, firefox-locale-ru, firefox-dev, firefox-locale-mr, firefox-locale-gu, firefox-locale-nb, firefox-locale-cy, firefox-locale-cak, firefox-locale-tg, firefox-locale-or, firefox-locale-my, firefox-locale-si, firefox-locale-is, firefox-locale-fy, firefox-locale-an, firefox-locale-csb, firefox-locale-nn, firefox-locale-vi, firefox-locale-uz, firefox-locale-el, firefox-locale-az, firefox, firefox-locale-bg, firefox-locale-be, firefox-locale-ga, firefox-locale-gn, firefox-locale-ku, firefox-locale-ms, firefox-locale-id, firefox-locale-da, firefox-locale-hr, firefox-locale-as, firefox-locale-he, firefox-mozsymbols, firefox-locale-bn, firefox-locale-tr, firefox-locale-ml, firefox-locale-ja