Firefox < 33.0 Multiple Vulnerabilities

This script is Copyright (C) 2014-2016 Tenable Network Security, Inc.

Synopsis :

The remote Windows host contains a web browser that is affected by
multiple vulnerabilities.

Description :

The version of Firefox installed on the remote Windows host is a
version prior to 33.0. It is, therefore, affected by the following
vulnerabilities :

- Multiple memory safety flaws exist within the browser
engine. Exploiting these, an attacker can cause a denial
of service or execute arbitrary code. (CVE-2014-1574,

- A buffer overflow vulnerability exists when
capitalization style changes occur during CSS parsing.

- An out-of-bounds read error exists in the Web Audio
component when invalid values are used in custom
waveforms that leads to a denial of service or
information disclosure. (CVE-2014-1577)

- An out-of-bounds write error exists when processing
invalid tile sizes in 'WebM' format videos that result
in arbitrary code execution. (CVE-2014-1578)

- Memory is not properly initialized during GIF rendering
within a '<canvas>' element. Using a specially crafted
web script, a remote attacker can exploit this to
acquire sensitive information from the process memory.

- A use-after-free error exists in the
'DirectionalityUtils' component when text direction is
used in the text layout that results in arbitrary
code execution. (CVE-2014-1581)

- Multiple security bypass vulnerabilities exist related
to key pinning, a method to prevent man-in-the-middle
attacks by verifying certificates. An attacker can use
SPDY or HTTP/2 connection coalescing to bypass key
pinning on websites that use a domain name that resolve
to the same IP address. Another issue exists in which
key pinning verification is not performed due to an
issue verifying the issuer of an SSL certificate. These
issues could result in man-in-the-middle attacks. Note
that key pinning was introduced in Firefox 32.
(CVE-2014-1582, CVE-2014-1584)

- An error exists that could allow a malicious app to use
'AlarmAPI' to read cross-origin references and possibly
allow for the same-origin policy to be bypassed.

- Multiple issues exist in WebRTC when the session is
running within an 'iframe' element that will allow the
session to be accessible even when sharing is stopped
and when returning to the website. This could lead to
video inadvertently being shared. (CVE-2014-1585,

See also :

Solution :

Upgrade to Firefox 33.0 or later.

Risk factor :

High / CVSS Base Score : 9.3
CVSS Temporal Score : 6.9
Public Exploit Available : false

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