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USN-6143-1: Firefox vulnerabilities

7 June 2023

Several security issues were fixed in Firefox.

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Releases

Packages

  • firefox - Mozilla Open Source web browser

Details

Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information across domains, or execute arbitrary code. (CVE-2023-34414,
CVE-2023-34416, CVE-2023-34417)

Jun Kokatsu discovered that Firefox did not properly validate site-isolated
process for a document loaded from a data: URL that was the result of a
redirect, leading to an open redirect attack. An attacker could possibly
use this issue to perform phishing attacks. (CVE-2023-34415)

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 20.04

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

Related notices

  • USN-6214-1: thunderbird-locale-en-us, thunderbird-locale-bn, thunderbird-locale-nl, thunderbird-gnome-support, thunderbird-locale-ast, thunderbird-locale-fy-nl, xul-ext-lightning, thunderbird-mozsymbols, thunderbird-locale-ms, thunderbird-locale-pt, thunderbird-locale-cs, thunderbird-locale-uk, thunderbird-locale-en-gb, thunderbird-locale-es-es, thunderbird-locale-ta-lk, thunderbird-locale-pt-pt, thunderbird-locale-sr, thunderbird-locale-bg, thunderbird-locale-es-ar, thunderbird-locale-is, thunderbird-locale-gl, thunderbird-locale-hsb, thunderbird-locale-bn-bd, thunderbird-locale-zh-hans, thunderbird-locale-de, thunderbird-locale-mk, thunderbird-locale-ta, thunderbird-locale-hr, xul-ext-calendar-timezones, thunderbird-locale-pt-br, thunderbird-locale-da, xul-ext-gdata-provider, thunderbird-locale-zh-hant, thunderbird-locale-sk, thunderbird-locale-lt, thunderbird-locale-ar, thunderbird-locale-zh-tw, thunderbird-locale-en, thunderbird-locale-ko, thunderbird-locale-hy, thunderbird-locale-ga, thunderbird-locale-fy, thunderbird-locale-nn, thunderbird-locale-id, thunderbird-locale-kab, thunderbird-locale-sv-se, thunderbird-locale-nb-no, thunderbird-locale-si, thunderbird-locale-ja, thunderbird-locale-kk, thunderbird-locale-vi, thunderbird-locale-ru, thunderbird-locale-sl, thunderbird-locale-es, thunderbird-locale-tr, thunderbird-locale-br, thunderbird-locale-th, thunderbird-locale-it, thunderbird, thunderbird-locale-be, thunderbird-locale-lv, thunderbird-locale-cak, thunderbird-dev, thunderbird-locale-el, thunderbird-locale-fa, thunderbird-locale-ga-ie, thunderbird-locale-pa-in, thunderbird-locale-af, thunderbird-locale-et, thunderbird-locale-fr, thunderbird-locale-zh-cn, thunderbird-locale-pl, thunderbird-locale-sv, thunderbird-locale-ka, thunderbird-locale-dsb, thunderbird-locale-hu, thunderbird-locale-pa, thunderbird-locale-gd, thunderbird-locale-ro, thunderbird-locale-he, thunderbird-locale-cy, thunderbird-locale-uz, thunderbird-locale-eu, thunderbird-locale-fi, thunderbird-locale-rm, thunderbird-locale-sq, thunderbird-locale-nb, thunderbird-locale-nn-no, thunderbird-locale-ca
  • USN-6147-1: libmozjs-102-0, mozjs102, libmozjs-102-dev