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USN-3801-1: Firefox vulnerabilities

24 October 2018

Firefox could be made to crash or run programs as your login if it opened a malicious website.

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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 in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, bypass CSP
restrictions, spoof the protocol registration notification bar, leak
SameSite cookies, bypass mixed content warnings, or execute arbitrary
code. (CVE-2018-12388, CVE-2018-12390, CVE-2018-12392, CVE-2018-12393,
CVE-2018-12398, CVE-2018-12399, CVE-2018-12401, CVE-2018-12402,
CVE-2018-12403)

Multiple security issues were discovered with WebExtensions in Firefox.
If a user were tricked in to installing a specially crafted extension, an
attacker could potentially exploit these to bypass domain restrictions,
gain additional privileges, or run content scripts in local pages without
permission. (CVE-2018-12395, CVE-2018-12396, CVE-2018-12397)

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 18.10
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

Related notices

  • USN-3868-1: thunderbird-locale-ga, thunderbird-locale-ca, thunderbird-locale-sv-se, thunderbird-locale-is, thunderbird-locale-mk, thunderbird-locale-pt, thunderbird-locale-tr, thunderbird-locale-ta-lk, thunderbird-mozsymbols, thunderbird-locale-ko, thunderbird-locale-sq, thunderbird-locale-zh-tw, thunderbird-locale-zh-hans, thunderbird-locale-it, thunderbird, thunderbird-testsuite, thunderbird-globalmenu, thunderbird-locale-ja, thunderbird-locale-de, xul-ext-lightning, thunderbird-locale-sk, thunderbird-locale-rm, thunderbird-locale-fy, thunderbird-locale-vi, thunderbird-locale-bg, thunderbird-locale-id, thunderbird-locale-nb, thunderbird-locale-nl, thunderbird-locale-bn, thunderbird-locale-ar, thunderbird-locale-sv, thunderbird-locale-es, thunderbird-locale-pa, thunderbird-locale-hr, thunderbird-dev, thunderbird-locale-kab, thunderbird-locale-ru, thunderbird-locale-br, thunderbird-locale-gl, thunderbird-locale-ms, thunderbird-locale-nn, thunderbird-locale-hu, thunderbird-locale-si, thunderbird-locale-he, thunderbird-locale-sr, thunderbird-locale-ta, thunderbird-locale-ast, thunderbird-locale-da, thunderbird-locale-es-ar, thunderbird-locale-nb-no, thunderbird-locale-es-es, thunderbird-locale-pt-pt, thunderbird-locale-ro, thunderbird-locale-ka, thunderbird-locale-nn-no, thunderbird-locale-ga-ie, thunderbird-locale-kk, thunderbird-locale-pl, thunderbird-locale-bn-bd, thunderbird-locale-en-us, thunderbird-locale-gd, thunderbird-locale-fy-nl, thunderbird-gnome-support, thunderbird-locale-fi, thunderbird-locale-cy, thunderbird-locale-fr, thunderbird-locale-en-gb, thunderbird-locale-lt, thunderbird-locale-af, thunderbird-locale-eu, thunderbird-locale-et, thunderbird-locale-pa-in, thunderbird-locale-zh-cn, thunderbird-locale-pt-br, thunderbird-locale-cs, thunderbird-locale-el, xul-ext-gdata-provider, xul-ext-calendar-timezones, thunderbird-locale-be, thunderbird-locale-dsb, thunderbird-locale-sl, thunderbird-locale-zh-hant, thunderbird-locale-hy, thunderbird-locale-en, thunderbird-locale-uk, thunderbird-locale-hsb