Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : firefox vulnerabilities (USN-3076-1)

Ubuntu Security Notice (C) 2016 Canonical, Inc. / NASL script (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

Atte Kettunen discovered an out-of-bounds read when handling certain
Content Security Policy (CSP) directives 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. (CVE-2016-2827)

Christoph Diehl, Christian Holler, Gary Kwong, Nathan Froyd, Honza
Bambas, Seth Fowler, Michael Smith, Andrew McCreight, Dan Minor, Byron
Campen, Jon Coppeard, Steve Fink, Tyson Smith, and Carsten Book
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. (CVE-2016-5256, CVE-2016-5257)

Atte Kettunen discovered a heap buffer overflow during text conversion
with some unicode characters. 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. (CVE-2016-5270)

Abhishek Arya discovered an out of bounds read during the processing
of text runs 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.
(CVE-2016-5271)

Abhishek Arya discovered a bad cast when processing layout with input
elements 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. (CVE-2016-5272)

A crash was discovered in accessibility. If a user were tricked in to
opening a specially crafted website, an attacker could potentially
exploit this to execute arbitrary code. (CVE-2016-5273)

A use-after-free was discovered in web animations during restyling. 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. (CVE-2016-5274)

A buffer overflow was discovered when working with empty filters
during canvas rendering. 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. (CVE-2016-5275)

A use-after-free was discovered in accessibility. 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. (CVE-2016-5276)

A use-after-free was discovered in web animations when destroying a
timeline. 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.
(CVE-2016-5277)

A buffer overflow was discovered when encoding image frames to images
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. (CVE-2016-5278)

Rafael Gieschke discovered that the full path of files is available to
web pages after a drag and drop operation. An attacker could
potentially exploit this to obtain sensitive information.
(CVE-2016-5279)

Mei Wang discovered a use-after-free when changing text direction. 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. (CVE-2016-5280)

Brian Carpenter discovered a use-after-free when manipulating SVG
content 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. (CVE-2016-5281)

Richard Newman discovered that favicons can be loaded through
non-whitelisted protocols, such as jar:. (CVE-2016-5282)

Gavin Sharp discovered a timing attack vulnerability involving
document resizes and link colours. If a user were tricked in to
opening a specially crafted website, an attacker could potentially
exploit this to obtain sensitive information. (CVE-2016-5283)

An issue was discovered with the preloaded Public Key Pinning (HPKP).
If a man-in-the-middle (MITM) attacker was able to obtain a fraudulent
certificate for a Mozilla site, they could exploit this by providing
malicious addon updates. (CVE-2016-5284).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected firefox package.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

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