Home / mailings [USN-1638-2] ubufox update
Posted on 21 November 2012
Ubuntu Security==========================
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Ubuntu Security Notice USN-1638-2
November 21, 2012
ubufox update
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS
Summary:
This update provides compatible ubufox packages for the latest Firefox.
Software Description:
- ubufox: Ubuntu Firefox specific configuration defaults and apt support
Details:
USN-1638-1 fixed vulnerabilities in Firefox. This update provides an
updated ubufox package for use with the latest Firefox.
Original advisory details:
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 th=
e
user invoking Firefox. (CVE-2012-5842, CVE-2012-5843)
=20
Atte Kettunen discovered a buffer overflow while rendering GIF format
images. An attacker could exploit this to possibly execute arbitrary cod=
e
as the user invoking Firefox. (CVE-2012-4202)
=20
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 special=
ly
crafted page, a remote attacker could exploit this to modify the content=
s,
or steal confidential data, within the same domain. (CVE-2012-4201)
=20
Jonathan Stephens discovered that combining vectors involving the settin=
g
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 us=
er
invoking the program. (CVE-2012-5836)
=20
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)
=20
Scott Bell discovered a memory corruption issue in the JavaScript engine=
=2E
If a user were tricked into opening a malicious website, an attacker cou=
ld
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)
=20
Gabor Krizsanits discovered that XMLHttpRequest objects created within
sandboxes have the system principal instead of the sandbox principal. Th=
is
can lead to cross-site request forgery (CSRF) or information theft via a=
n
add-on running untrusted code in a sandbox. (CVE-2012-4205)
=20
Peter Van der Beken discovered XrayWrapper implementation in Firefox doe=
s
not consider the compartment during property filtering. An attacker coul=
d
use this to bypass intended chrome-only restrictions on reading DOM obje=
ct
properties via a crafted web site. (CVE-2012-4208)
=20
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 viewin=
g a
specially crafted page, a remote attacker could exploit this to modify t=
he
contents, or steal confidential data, within the same domain.
(CVE-2012-5841)
=20
Masato Kinugawa discovered that when HZ-GB-2312 charset encoding is used=
for text, the "~" character will destroy another character near the chun=
k
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 u=
ser
were tricked into viewing a specially crafted page, a remote attacker co=
uld
exploit these to modify the contents, or steal confidential data, within=
the same domain. (CVE-2012-4207)
=20
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 confidentia=
l
data, within the same domain. (CVE-2012-4209)
=20
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 wer=
e
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)
=20
Abhishek Arya discovered multiple use-after-free and buffer overflow iss=
ues
in Firefox. If a user were tricked into opening a malicious page, an
attacker could exploit these to execute arbitrary code as the user invok=
ing
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-2012-421=
7,
CVE-2012-4218)
=20
Several memory corruption flaws were discovered in Firefox. If a user we=
re
tricked into opening a malicious page, an attacker could exploit these t=
o
execute arbitrary code as the user invoking the program. (CVE-2012-5830,=
CVE-2012-5833, CVE-2012-5835, CVE-2012-5838)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.10:
xul-ext-ubufox 2.6-0ubuntu0.12.10.1
Ubuntu 12.04 LTS:
xul-ext-ubufox 2.6-0ubuntu0.12.04.1
Ubuntu 11.10:
xul-ext-ubufox 2.6-0ubuntu0.11.10.1
Ubuntu 10.04 LTS:
xul-ext-ubufox 2.6-0ubuntu0.10.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1638-2
http://www.ubuntu.com/usn/usn-1638-1
https://launchpad.net/bugs/1080211
Package Information:
https://launchpad.net/ubuntu/+source/ubufox/2.6-0ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/ubufox/2.6-0ubuntu0.12.04.1
https://launchpad.net/ubuntu/+source/ubufox/2.6-0ubuntu0.11.10.1
https://launchpad.net/ubuntu/+source/ubufox/2.6-0ubuntu0.10.04.1
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