Ubuntu 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : firefox regressions (USN-1638-3)

Ubuntu Security Notice (C) 2012-2013 Canonical, Inc. / NASL script (C) 2012-2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

USN-1638-1 fixed vulnerabilities in Firefox. The new packages
introduced regressions in cookies handling and the User Agent string.
This update fixes the problem.

Gary Kwong, Jesse Ruderman, Christian Holler, Bob Clary, Kyle Huey, Ed
Morley, Chris Lord, Boris Zbarsky, Julian Seward, Bill McCloskey, and
Andrew McCreight discovered multiple memory safety issues affecting
Firefox. If the user were tricked into opening a specially crafted
page, an attacker could possibly exploit these to cause a denial of
service via application crash, or potentially execute code with the
privileges of the user invoking Firefox. (CVE-2012-5842,
CVE-2012-5843)

Atte Kettunen discovered a buffer overflow while rendering
GIF format images. An attacker could exploit this to
possibly execute arbitrary code as the user invoking
Firefox. (CVE-2012-4202)

It was discovered that the evalInSandbox function's
JavaScript sandbox context could be circumvented. An
attacker could exploit this to perform a cross-site
scripting (XSS) attack or steal a copy of a local file if
the user has installed an add-on vulnerable to this attack.
With cross-site scripting vulnerabilities, if a user were
tricked into viewing a specially crafted page, a remote
attacker could exploit this to modify the contents, or steal
confidential data, within the same domain. (CVE-2012-4201)

Jonathan Stephens discovered that combining vectors
involving the setting of Cascading Style Sheets (CSS)
properties in conjunction with SVG text could cause Firefox
to crash. If a user were tricked into opening a malicious
web page, an attacker could cause a denial of service via
application crash or execute arbitrary code with the
privliges of the user invoking the program. (CVE-2012-5836)

It was discovered that if a javascript: URL is selected from
the list of Firefox 'new tab' page, the script will inherit
the privileges of the privileged 'new tab' page. This allows
for the execution of locally installed programs if a user
can be convinced to save a bookmark of a malicious
javascript: URL. (CVE-2012-4203)

Scott Bell discovered a memory corruption issue in the
JavaScript engine. If a user were tricked into opening a
malicious website, an attacker could exploit this to execute
arbitrary JavaScript code within the context of another
website or arbitrary code as the user invoking the program.
(CVE-2012-4204)

Gabor Krizsanits discovered that XMLHttpRequest objects
created within sandboxes have the system principal instead
of the sandbox principal. This can lead to cross-site
request forgery (CSRF) or information theft via an add-on
running untrusted code in a sandbox. (CVE-2012-4205)

Peter Van der Beken discovered XrayWrapper implementation in
Firefox does not consider the compartment during property
filtering. An attacker could use this to bypass intended
chrome-only restrictions on reading DOM object properties
via a crafted web site. (CVE-2012-4208)

Bobby Holley discovered that cross-origin wrappers were
allowing write actions on objects when only read actions
should have been properly allowed. This can lead to
cross-site scripting (XSS) attacks. With cross-site
scripting vulnerabilities, if a user were tricked into
viewing a specially crafted page, a remote attacker could
exploit this to modify the contents, or steal confidential
data, within the same domain. (CVE-2012-5841)

Masato Kinugawa discovered that when HZ-GB-2312 charset
encoding is used for text, the '~' character will destroy
another character near the chunk delimiter. This can lead to
a cross-site scripting (XSS) attack in pages encoded in
HZ-GB-2312. With cross-site scripting vulnerabilities, if a
user were tricked into viewing a specially crafted page, a
remote attacker could exploit this to modify the contents,
or steal confidential data, within the same domain.
(CVE-2012-4207)

Masato Kinugawa discovered that scripts entered into the
Developer Toolbar could run in a chrome privileged context.
An attacker could use this vulnerability to conduct
cross-site scripting (XSS) attacks or execute arbitrary code
as the user invoking Firefox. With cross-site scripting
vulnerabilities, if a user were tricked into viewing a
specially crafted page, a remote attacker could exploit this
to modify the contents, or steal confidential data, within
the same domain. (CVE-2012-5837)

Mariusz Mlynski discovered that the location property can be
accessed by binary plugins through top.location with a frame
whose name attribute's value is set to 'top'. This can allow
for possible cross-site scripting (XSS) attacks through
plugins. With cross-site scripting vulnerabilities, if a
user were tricked into viewing a specially crafted page, a
remote attacker could exploit this to modify the contents,
or steal confidential data, within the same domain.
(CVE-2012-4209)

Mariusz Mlynski discovered that when a maliciously crafted
stylesheet is inspected in the Style Inspector, HTML and CSS
can run in a chrome privileged context without being
properly sanitized first. If a user were tricked into
opening a malicious web page, an attacker could execute
arbitrary code with the privliges of the user invoking the
program. (CVE-2012-4210)

Abhishek Arya discovered multiple use-after-free and buffer
overflow issues in Firefox. If a user were tricked into
opening a malicious page, an attacker could exploit these to
execute arbitrary code as the user invoking the program.
(CVE-2012-4214, CVE-2012-4215, CVE-2012-4216, CVE-2012-5829,
CVE-2012-5839, CVE-2012-5840, CVE-2012-4212, CVE-2012-4213,
CVE-2012-4217, CVE-2012-4218)

Several memory corruption flaws were discovered in Firefox.
If a user were tricked into opening a malicious page, an
attacker could exploit these to execute arbitrary code as
the user invoking the program. (CVE-2012-5830,
CVE-2012-5833, CVE-2012-5835, CVE-2012-5838).

Solution :

Update the affected firefox package.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)