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USN-4150-1: Thunderbird vulnerabilities

8 October 2019

Several security issues were fixed in Thunderbird.

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Releases

Packages

  • thunderbird - Mozilla Open Source mail and newsgroup client

Details

It was discovered that encrypted S/MIME parts in a multipart message can
leak plaintext contents when included in a HTML reply or forward in some
circumstances. If a user were tricked in to replying to or forwarding a
specially crafted message, an attacker could potentially exploit this to
obtain sensitive information. (CVE-2019-11739)

Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to obtain sensitive
information, conduct cross-site scripting (XSS) attack, scause a denial
of service, or execute arbitrary code. (CVE-2019-11740, CVE-2019-11742,
CVE-2019-11743, CVE-2019-11744, CVE-2019-11746, CVE-2019-11752)

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 19.04
Ubuntu 18.04
Ubuntu 16.04

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

Related notices

  • USN-4122-1: firefox-locale-ne, firefox-locale-ku, firefox-locale-br, firefox-locale-nn, firefox-locale-ru, firefox-locale-si, firefox-locale-xh, firefox-locale-id, firefox-locale-pt, firefox-locale-cy, firefox-locale-et, firefox-locale-km, firefox-locale-sw, firefox-locale-oc, firefox-locale-kab, firefox, firefox-locale-uz, firefox-locale-zu, firefox-locale-sk, firefox-locale-nl, firefox-locale-uk, firefox-locale-zh-hans, firefox-locale-kk, firefox-locale-he, firefox-locale-ka, firefox-locale-sq, firefox-locale-ko, firefox-locale-pl, firefox-locale-hsb, firefox-locale-bs, firefox-locale-my, firefox-locale-mn, firefox-locale-ca, firefox-locale-az, firefox-locale-fy, firefox-locale-ms, firefox-locale-hu, firefox-locale-gl, firefox-dev, firefox-locale-it, firefox-locale-ast, firefox-locale-ja, firefox-locale-gn, firefox-locale-bg, firefox-locale-te, firefox-locale-ta, firefox-locale-as, firefox-locale-vi, firefox-locale-ar, firefox-locale-an, firefox-locale-sv, firefox-locale-nb, firefox-locale-or, firefox-locale-mr, firefox-locale-eu, firefox-locale-lt, firefox-locale-lg, firefox-locale-ro, firefox-locale-ml, firefox-locale-lv, firefox-locale-nso, firefox-locale-sr, firefox-locale-gd, firefox-locale-hr, firefox-locale-el, firefox-locale-pa, firefox-geckodriver, firefox-locale-kn, firefox-locale-es, firefox-locale-en, firefox-locale-th, firefox-locale-mai, firefox-locale-is, firefox-locale-hy, firefox-locale-cs, firefox-locale-fi, firefox-locale-be, firefox-mozsymbols, firefox-locale-fa, firefox-locale-ga, firefox-locale-ia, firefox-locale-mk, firefox-locale-csb, firefox-locale-sl, firefox-locale-eo, firefox-locale-zh-hant, firefox-locale-hi, firefox-locale-tr, firefox-locale-gu, firefox-locale-de, firefox-locale-af, firefox-locale-da, firefox-locale-ur, firefox-locale-fr, firefox-locale-bn, firefox-locale-cak