USN-2917-1: Firefox vulnerabilities

Releases

• Ubuntu 15.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• firefox - Mozilla Open Source web browser

Details

Francis Gabriel discovered a buffer overflow during ASN.1 decoding in NSS.
If a user were tricked in to opening a specially crafted website, an
attacker could potentially exploit this to cause a denial of service via
application crash, or execute arbitrary code with the privileges of the
user invoking Firefox. (CVE-2016-1950)

Bob Clary, Christoph Diehl, Christian Holler, Andrew McCreight, Daniel
Holbert, Jesse Ruderman, Randell Jesup, Carsten Book, Gian-Carlo Pascutto,
Tyson Smith, Andrea Marchesini, and Jukka Jylänki discovered multiple
memory safety issues 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 via application crash, or execute arbitrary code
with the privileges of the user invoking Firefox. (CVE-2016-1952,
CVE-2016-1953)

Nicolas Golubovic discovered that CSP violation reports can be used to
overwrite local files. If a user were tricked in to opening a specially
crafted website with addon signing disabled and unpacked addons installed,
an attacker could potentially exploit this to gain additional privileges.
(CVE-2016-1954)

Muneaki Nishimura discovered that CSP violation reports contained full
paths for cross-origin iframe navigations. An attacker could potentially
exploit this to steal confidential data. (CVE-2016-1955)

Ucha Gobejishvili discovered that performing certain WebGL operations
resulted in memory resource exhaustion with some Intel GPUs, requiring
a reboot. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to cause a denial
of service. (CVE-2016-1956)

Jose Martinez and Romina Santillan discovered a memory leak in
libstagefright during MPEG4 video file processing in some circumstances.
If a user were tricked in to opening a specially crafted website, an
attacker could potentially exploit this to cause a denial of service via
memory exhaustion. (CVE-2016-1957)

Abdulrahman Alqabandi discovered that the addressbar could be blank or
filled with page defined content in some circumstances. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit this to conduct URL spoofing attacks. (CVE-2016-1958)

Looben Yang discovered an out-of-bounds read in Service Worker Manager. If
a user were tricked in to opening a specially crafted website, an attacker
could potentially exploit this to cause a denial of service via
application crash, or execute arbitrary code with the privileges of the
user invoking Firefox. (CVE-2016-1959)

A use-after-free was discovered in the HTML5 string parser. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit this to cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Firefox. (CVE-2016-1960)

A use-after-free was discovered in the SetBody function of HTMLDocument.
If a user were tricked in to opening a specially crafted website, an
attacker could potentially exploit this to cause a denial of service via
application crash, or execute arbitrary code with the privileges of the
user invoking Firefox. (CVE-2016-1961)

Dominique Hazaël-Massieux discovered a use-after-free when using multiple
WebRTC data channels. If a user were tricked in to opening a specially
crafted website, an attacker could potentially exploit this to cause a
denial of service via application crash, or execute arbitrary code with
the privileges of the user invoking Firefox. (CVE-2016-1962)

It was discovered that Firefox crashes when local files are modified
whilst being read by the FileReader API. If a user were tricked in to
opening a specially crafted website, an attacker could potentially exploit
this to execute arbitrary code with the privileges of the user invoking
Firefox. (CVE-2016-1963)

Nicolas Grégoire discovered a use-after-free during XML transformations.
If a user were tricked in to opening a specially crafted website, an
attacker could potentially exploit this to cause a denial of service via
application crash, or execute arbitrary code with the privileges of the
user invoking Firefox. (CVE-2016-1964)

Tsubasa Iinuma discovered a mechanism to cause the addressbar to display
an incorrect URL, using history navigations and the Location protocol
property. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to conduct URL
spoofing attacks. (CVE-2016-1965)

A memory corruption issues was discovered in the NPAPI subsystem. If
a user were tricked in to opening a specially crafted website with a
malicious plugin installed, an attacker could potentially exploit this
to cause a denial of service via application crash, or execute arbitrary
code with the privileges of the user invoking Firefox. (CVE-2016-1966)

Jordi Chancel discovered a same-origin-policy bypass when using
performance.getEntries and history navigation with session restore. If
a user were tricked in to opening a specially crafted website, an attacker
could potentially exploit this to steal confidential data. (CVE-2016-1967)

Luke Li discovered a buffer overflow during Brotli decompression in some
circumstances. If a user were tricked in to opening a specially crafted
website, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code with the
privileges of the user invoking Firefox. (CVE-2016-1968)

Ronald Crane discovered a use-after-free in GetStaticInstance in WebRTC.
If a user were tricked in to opening a specially crafted website, an
attacker could potentially exploit this to cause a denial of service via
application crash, or execute arbitrary code with the privileges of the
user invoking Firefox. (CVE-2016-1973)

Ronald Crane discovered an out-of-bounds read following a failed
allocation in the HTML parser in some circumstances. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit this to cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Firefox. (CVE-2016-1974)

Holger Fuhrmannek, Tyson Smith and Holger Fuhrmannek reported multiple
memory safety issues in the Graphite 2 library. If a user were tricked in
to opening a specially crafted website, an attacker could potentially
exploit these to cause a denial of service via application crash, or
execute arbitrary code with the privileges of the user invoking Firefox.
(CVE-2016-1977, CVE-2016-2790, CVE-2016-2791, CVE-2016-2792,
CVE-2016-2793, CVE-2016-2794, CVE-2016-2795, CVE-2016-2796, CVE-2016-2797,
CVE-2016-2798, CVE-2016-2799, CVE-2016-2800, CVE-2016-2801, CVE-2016-2802)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 15.10

• firefox - 45.0+build2-0ubuntu0.15.10.1

Ubuntu 14.04

• firefox - 45.0+build2-0ubuntu0.14.04.1

Ubuntu 12.04

• firefox - 45.0+build2-0ubuntu0.12.04.1

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

References

• CVE-2016-1950
• CVE-2016-1952
• CVE-2016-1953
• CVE-2016-1954
• CVE-2016-1955
• CVE-2016-1956
• CVE-2016-1957
• CVE-2016-1958
• CVE-2016-1959
• CVE-2016-1960
• CVE-2016-1961
• CVE-2016-1962
• CVE-2016-1963
• CVE-2016-1964
• CVE-2016-1965
• CVE-2016-1966
• CVE-2016-1967
• CVE-2016-1968
• CVE-2016-1973
• CVE-2016-1974
• CVE-2016-1977
• CVE-2016-2790
• CVE-2016-2791
• CVE-2016-2792
• CVE-2016-2793
• CVE-2016-2794
• CVE-2016-2795
• CVE-2016-2796
• CVE-2016-2797
• CVE-2016-2798
• CVE-2016-2799
• CVE-2016-2800
• CVE-2016-2801
• CVE-2016-2802

Related notices

• USN-2924-1: libnss3-dev, nss, libnss3-1d, libnss3-nssdb, libnss3, libnss3-tools
• USN-2934-1: thunderbird-locale-en, thunderbird-locale-sv, thunderbird-locale-ar, thunderbird-locale-tr, thunderbird-locale-pa, thunderbird-locale-gl, thunderbird-locale-it, thunderbird-testsuite, thunderbird-locale-fi, thunderbird-locale-af, thunderbird-locale-ru, thunderbird-locale-ga, thunderbird-locale-el, thunderbird-gnome-support, thunderbird-locale-nn, thunderbird-globalmenu, thunderbird-locale-sq, thunderbird-locale-bn-bd, thunderbird-mozsymbols, thunderbird-locale-ja, thunderbird-locale-zh-tw, xul-ext-lightning, thunderbird-locale-uk, thunderbird-locale-ro, thunderbird-locale-id, thunderbird-locale-pl, thunderbird-locale-nl, thunderbird-locale-hr, thunderbird-locale-zh-hant, thunderbird-locale-hy, thunderbird-locale-en-gb, thunderbird, thunderbird-locale-pa-in, thunderbird-locale-is, thunderbird-locale-dsb, thunderbird-locale-cs, thunderbird-locale-es, thunderbird-locale-de, thunderbird-locale-bg, thunderbird-locale-ga-ie, thunderbird-locale-ka, thunderbird-locale-he, thunderbird-locale-et, thunderbird-locale-es-ar, thunderbird-locale-ca, thunderbird-locale-vi, thunderbird-locale-es-es, thunderbird-locale-fy-nl, thunderbird-locale-pt-br, thunderbird-locale-ta, thunderbird-locale-zh-cn, xul-ext-gdata-provider, thunderbird-locale-ast, thunderbird-locale-cy, thunderbird-locale-sk, thunderbird-locale-en-us, thunderbird-locale-fy, thunderbird-locale-nn-no, thunderbird-locale-nb, thunderbird-locale-sl, thunderbird-locale-ko, thunderbird-locale-sv-se, thunderbird-locale-pt-pt, thunderbird-locale-ta-lk, thunderbird-locale-be, thunderbird-locale-nb-no, thunderbird-locale-bn, thunderbird-locale-fr, thunderbird-locale-br, thunderbird-locale-hu, thunderbird-locale-da, thunderbird-locale-mk, thunderbird-dev, thunderbird-locale-gd, thunderbird-locale-hsb, thunderbird-locale-pt, thunderbird-locale-lt, thunderbird-locale-si, thunderbird-locale-sr, thunderbird-locale-zh-hans, xul-ext-calendar-timezones, thunderbird-locale-eu, thunderbird-locale-rm
• USN-2927-1: libgraphite2-doc, graphite2, libgraphite2-3, libgraphite2-dev