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USN-2702-1: Firefox vulnerabilities

11 August 2015

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

Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley,
Chris Coulson, and Eric Rahm 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-2015-4473, CVE-2015-4474)

Aki Helin discovered an out-of-bounds read when playing malformed MP3
content in some circumstances. If a user were tricked in to opening a
specially crafted website, an attacker could potentially exploit this to
obtain sensitive information, cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Firefox. (CVE-2015-4475)

A use-after-free was discovered during MediaStream playback 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
priviliges of the user invoking Firefox. (CVE-2015-4477)

André Bargull discovered that non-configurable properties on javascript
objects could be redefined when parsing JSON. If a user were tricked in to
opening a specially crafted website, an attacker could potentially exploit
this to bypass same-origin restrictions. (CVE-2015-4478)

Multiple integer overflows were discovered in libstagefright. 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-2015-4479, CVE-2015-4480, CVE-2015-4493)

Jukka Jylänki discovered a crash that occurs because javascript does not
properly gate access to Atomics or SharedArrayBuffers 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. (CVE-2015-4484)

Abhishek Arya discovered 2 buffer overflows in libvpx when decoding
malformed WebM content in some circumstances. 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-2015-4485, CVE-2015-4486)

Ronald Crane reported 3 security issues. If a user were tricked in to
opening a specially crafted website, an attacker could potentially
exploit these, in combination with another security vulnerability, to
cause a denial of service via application crash, or execute arbitrary
code with the privileges of the user invoking Firefox. (CVE-2015-4487,
CVE-2015-4488, CVE-2015-4489)

Christoph Kerschbaumer discovered an issue with Mozilla's implementation
of Content Security Policy (CSP), which could allow for a more permissive
usage in some cirucumstances. An attacker could potentially exploit this
to conduct cross-site scripting (XSS) attacks. (CVE-2015-4490)

Gustavo Grieco discovered a heap overflow in gdk-pixbuf. 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 priviliges of the user invoking
Firefox. (CVE-2015-4491)

Looben Yang discovered a use-after-free when using XMLHttpRequest with
shared workers 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 priviliges of the user invoking Firefox. (CVE-2015-4492)

Update instructions

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

Ubuntu 15.04
Ubuntu 14.04
Ubuntu 12.04

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

Related notices

  • USN-2722-1: libgdk-pixbuf2.0-0-udeb, libgdk-pixbuf2.0-dev, libgdk-pixbuf2.0-doc, libgdk-pixbuf2.0-common, gir1.2-gdkpixbuf-2.0, libgdk-pixbuf2.0-0, gdk-pixbuf
  • USN-2712-1: thunderbird-locale-ko, xul-ext-calendar-timezones, thunderbird-locale-ca, thunderbird-locale-en, thunderbird-locale-vi, thunderbird-locale-sq, thunderbird-mozsymbols, thunderbird-locale-gd, thunderbird-locale-be, thunderbird-locale-el, thunderbird-locale-en-gb, thunderbird-locale-cy, thunderbird-locale-pt, thunderbird-locale-es, thunderbird-locale-da, thunderbird-locale-bn-bd, thunderbird-locale-sk, thunderbird-locale-ar, thunderbird-locale-en-us, thunderbird-locale-cs, thunderbird-locale-br, thunderbird-locale-ru, thunderbird-locale-ta-lk, thunderbird-locale-zh-tw, thunderbird-locale-de, thunderbird-locale-es-es, thunderbird-locale-pt-br, thunderbird-locale-zh-hant, thunderbird-gnome-support, thunderbird-locale-ga-ie, thunderbird-locale-ja, thunderbird-locale-af, thunderbird-locale-id, thunderbird-locale-fr, thunderbird-locale-nb, thunderbird-locale-nn, xul-ext-gdata-provider, thunderbird-locale-nl, thunderbird-locale-tr, thunderbird-locale-ta, thunderbird-globalmenu, thunderbird-locale-zh-cn, thunderbird-locale-sl, thunderbird-locale-nn-no, thunderbird-locale-is, thunderbird-locale-nb-no, thunderbird-locale-hu, thunderbird-locale-et, thunderbird-locale-pa-in, thunderbird-locale-rm, thunderbird-locale-sv, thunderbird-locale-lt, thunderbird-locale-zh-hans, thunderbird-locale-fy, xul-ext-lightning, thunderbird-locale-he, thunderbird-locale-hy, thunderbird-locale-sv-se, thunderbird-locale-gl, thunderbird-locale-bg, thunderbird-locale-mk, thunderbird-locale-si, thunderbird-locale-pl, thunderbird-locale-ka, thunderbird-locale-eu, thunderbird, thunderbird-locale-bn, thunderbird-locale-ga, thunderbird-locale-pa, thunderbird-locale-fy-nl, thunderbird-locale-hr, thunderbird-locale-hsb, thunderbird-locale-sr, thunderbird-locale-pt-pt, thunderbird-dev, thunderbird-locale-it, thunderbird-locale-ro, thunderbird-locale-es-ar, thunderbird-locale-ast, thunderbird-locale-fi, thunderbird-locale-uk, thunderbird-testsuite, thunderbird-locale-dsb