Ubuntu 12.04 LTS / 14.04 LTS / 14.10 : firefox vulnerabilities (USN-2458-1)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

Christian Holler, Patrick McManus, Christoph Diehl, Gary Kwong, Jesse
Ruderman, Byron Campen, Terrence Cole, and Nils Ohlmeier 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-2014-8634, CVE-2014-8635)

Bobby Holley discovered that some DOM objects with certain properties
can bypass XrayWrappers in some circumstances. If a user were tricked
in to opening a specially crafted website, an attacker could
potentially exploit this to bypass security restrictions.
(CVE-2014-8636)

Michal Zalewski discovered a use of uninitialized memory when
rendering malformed bitmap images on a canvas element. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit this to steal confidential information.
(CVE-2014-8637)

Muneaki Nishimura discovered that requests from navigator.sendBeacon()
lack an origin header. If a user were tricked in to opening a
specially crafted website, an attacker could potentially exploit this
to conduct cross-site request forgery (XSRF) attacks. (CVE-2014-8638)

Xiaofeng Zheng discovered that a web proxy returning a 407 response
could inject cookies in to the originally requested domain. If a user
connected to a malicious web proxy, an attacker could potentially
exploit this to conduct session-fixation attacks. (CVE-2014-8639)

Holger Fuhrmannek discovered a crash in Web Audio while manipulating
timelines. 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-2014-8640)

Mitchell Harper discovered a use-after-free 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-2014-8641)

Brian Smith discovered that OCSP responses would fail to verify if
signed by a delegated OCSP responder certificate with the
id-pkix-ocsp-nocheck extension, potentially allowing a user to connect
to a site with a revoked certificate. (CVE-2014-8642).

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 : 6.8
(CVSS2#E:POC/RL:ND/RC:C)
Public Exploit Available : true

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