USN-3477-1: Firefox vulnerabilities
16 November 2017
Firefox could be made to crash or run programs as your login if it opened a malicious website.
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, read uninitialized
memory, obtain sensitive information, bypass same-origin restrictions,
bypass CSP protections, bypass mixed content blocking, spoof the
addressbar, or execute arbitrary code. (CVE-2017-7826, CVE-2017-7827,
CVE-2017-7828, CVE-2017-7830, CVE-2017-7831, CVE-2017-7832, CVE-2017-7833,
CVE-2017-7834, CVE-2017-7835, CVE-2017-7837, CVE-2017-7838, CVE-2017-7842)
It was discovered that javascript: URLs pasted in to the addressbar
would be executed instead of being blocked in some circumstances. If a
user were tricked in to copying a specially crafted URL in to the
addressbar, an attacker could potentially exploit this to conduct
cross-site scripting (XSS) attacks. (CVE-2017-7839)
It was discovered that exported bookmarks do not strip script elements
from user-supplied tags. If a user were tricked in to adding specially
crafted tags to bookmarks, exporting them and then opening the resulting
HTML file, an attacker could potentially exploit this to conduct
cross-site scripting (XSS) attacks. (CVE-2017-7840)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 17.10
Ubuntu 17.04
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-3490-1: thunderbird-locale-el, thunderbird-testsuite, thunderbird-locale-bg, thunderbird-locale-ga, thunderbird-locale-ca, thunderbird-locale-af, thunderbird-locale-en, thunderbird-locale-hu, thunderbird-dev, thunderbird-locale-id, thunderbird-locale-hr, thunderbird-locale-vi, thunderbird-locale-is, thunderbird-locale-ast, thunderbird-locale-zh-hant, thunderbird-locale-es, thunderbird-locale-es-ar, thunderbird-locale-ka, thunderbird-locale-he, thunderbird-mozsymbols, thunderbird-locale-pt-pt, thunderbird-locale-nl, thunderbird-locale-nn-no, thunderbird-locale-pl, xul-ext-calendar-timezones, thunderbird-locale-cy, thunderbird-locale-pt, thunderbird-locale-es-es, thunderbird-locale-tr, thunderbird-locale-de, thunderbird-locale-fy-nl, thunderbird-locale-hy, thunderbird-locale-ja, thunderbird-locale-mk, thunderbird-locale-ta, thunderbird-locale-fi, thunderbird-locale-da, thunderbird-locale-sv-se, thunderbird-locale-ko, thunderbird-locale-zh-tw, thunderbird-locale-ru, thunderbird-locale-bn, thunderbird-locale-sv, thunderbird-locale-fy, thunderbird-locale-gl, thunderbird-locale-sq, thunderbird-globalmenu, thunderbird-locale-sk, thunderbird-locale-lt, thunderbird-locale-pa, thunderbird-locale-eu, thunderbird-locale-br, thunderbird-locale-et, thunderbird, thunderbird-locale-bn-bd, thunderbird-locale-uk, thunderbird-locale-gd, thunderbird-locale-kab, thunderbird-locale-fr, thunderbird-gnome-support, thunderbird-locale-hsb, thunderbird-locale-sl, thunderbird-locale-si, thunderbird-locale-en-gb, thunderbird-locale-dsb, thunderbird-locale-en-us, thunderbird-locale-ro, thunderbird-locale-ar, thunderbird-locale-rm, thunderbird-locale-pt-br, thunderbird-locale-cs, thunderbird-locale-zh-hans, thunderbird-locale-pa-in, thunderbird-locale-ga-ie, xul-ext-lightning, thunderbird-locale-it, xul-ext-gdata-provider, thunderbird-locale-ta-lk, thunderbird-locale-sr, thunderbird-locale-zh-cn, thunderbird-locale-nn, thunderbird-locale-be, thunderbird-locale-nb-no, thunderbird-locale-nb
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