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Ubuntu Security Notice USN-2702-2

Ubuntu Security Notice USN-2702-2
Posted Aug 11, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2702-2 - USN-2702-1 fixed vulnerabilities in Firefox. This update provides the corresponding updates for Ubufox. Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley, Chris Coulson, and Eric Rahm 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. Aki Helin discovered an out-of-bounds read when playing malformed MP3 content in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information, cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-4475, CVE-2015-4477, CVE-2015-4478, CVE-2015-4484, CVE-2015-4488, CVE-2015-4489, CVE-2015-4490, CVE-2015-4491, CVE-2015-4492
SHA-256 | 65d42413fe11e2a48dd6d53eeba68c39ca1690d1ee5c7080c2611bb212733ef9

Ubuntu Security Notice USN-2702-2

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2702-2
August 11, 2015

ubufox update
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

This update provides compatible packages for Firefox 40.

Software Description:
- ubufox: Ubuntu modifications for Firefox

Details:

USN-2702-1 fixed vulnerabilities in Firefox. This update provides the
corresponding updates for Ubufox.

Original advisory details:

Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley,
Chris Coulson, and Eric Rahm 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-2015-4473, CVE-2015-4474)

Aki Helin discovered an out-of-bounds read when playing malformed MP3
content in some circumstances. If a user were tricked in to opening a
specially crafted website, an attacker could potentially exploit this to
obtain sensitive information, cause a denial of service via application
crash, or execute arbitrary code with the privileges of the user invoking
Firefox. (CVE-2015-4475)

A use-after-free was discovered during MediaStream playback 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 with the
priviliges of the user invoking Firefox. (CVE-2015-4477)

Andr=E9 Bargull discovered that non-configurable properties on javascript
objects could be redefined when parsing JSON. If a user were tricked in to
opening a specially crafted website, an attacker could potentially exploit
this to bypass same-origin restrictions. (CVE-2015-4478)

Multiple integer overflows were discovered in libstagefright. 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-2015-4479, CVE-2015-4480, CVE-2015-4493)

Jukka Jyl=E4nki discovered a crash that occurs because javascript does not
properly gate access to Atomics or SharedArrayBuffers 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. (CVE-2015-4484)

Abhishek Arya discovered 2 buffer overflows in libvpx when decoding
malformed WebM content in some circumstances. 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-2015-4485, CVE-2015-4486)

Ronald Crane reported 3 security issues. If a user were tricked in to
opening a specially crafted website, an attacker could potentially
exploit these, in combination with another security vulnerability, to
cause a denial of service via application crash, or execute arbitrary
code with the privileges of the user invoking Firefox. (CVE-2015-4487,
CVE-2015-4488, CVE-2015-4489)

Christoph Kerschbaumer discovered an issue with Mozilla's implementation
of Content Security Policy (CSP), which could allow for a more permissive
usage in some cirucumstances. An attacker could potentially exploit this
to conduct cross-site scripting (XSS) attacks. (CVE-2015-4490)

Gustavo Grieco discovered a heap overflow in gdk-pixbuf. 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 priviliges of the user invoking
Firefox. (CVE-2015-4491)

Looben Yang discovered a use-after-free when using XMLHttpRequest with
shared workers 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
with the priviliges of the user invoking Firefox. (CVE-2015-4492)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 15.04:
xul-ext-ubufox 3.1-0ubuntu0.15.04.1

Ubuntu 14.04 LTS:
xul-ext-ubufox 3.1-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
xul-ext-ubufox 3.1-0ubuntu0.12.04.1

After a standard system update you need to restart Firefox to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2702-2
http://www.ubuntu.com/usn/usn-2702-1
https://launchpad.net/bugs/1483858

Package Information:
https://launchpad.net/ubuntu/+source/ubufox/3.1-0ubuntu0.15.04.1
https://launchpad.net/ubuntu/+source/ubufox/3.1-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/ubufox/3.1-0ubuntu0.12.04.1
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