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Ubuntu Security Notice USN-3044-1

Ubuntu Security Notice USN-3044-1
Posted Aug 5, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3044-1 - Gustavo Grieco discovered an out-of-bounds read during XML parsing 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 obtain sensitive information. Toni Huttunen discovered that once a favicon is requested from a site, the remote server can keep the network connection open even after the page is closed. A remote attacker could potentially exploit this to track users, resulting in information disclosure. Various other issues were also addressed.

tags | advisory, remote, denial of service, info disclosure
systems | linux, ubuntu
advisories | CVE-2016-0718, CVE-2016-2830, CVE-2016-2835, CVE-2016-2836, CVE-2016-2837, CVE-2016-2838, CVE-2016-2839, CVE-2016-5250, CVE-2016-5251, CVE-2016-5252, CVE-2016-5254, CVE-2016-5255, CVE-2016-5258, CVE-2016-5259, CVE-2016-5260, CVE-2016-5261, CVE-2016-5262, CVE-2016-5263, CVE-2016-5264, CVE-2016-5265, CVE-2016-5266, CVE-2016-5268
MD5 | e28a474bdb19789cea82ed5d243b5ee3

Ubuntu Security Notice USN-3044-1

Change Mirror Download

=========================================================================
Ubuntu Security Notice USN-3044-1
August 05, 2016

firefox vulnerabilities
=========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Firefox could be made to crash or run programs as your login if it
opened a malicious website.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

Gustavo Grieco discovered an out-of-bounds read during XML parsing 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 obtain sensitive information.

(CVE-2016-0718)

Toni Huttunen discovered that once a favicon is requested from a site,
the remote server can keep the network connection open even after the pag
e
is closed. A remote attacked could potentially exploit this to track
users, resulting in information disclosure. (CVE-2016-2830)

Christian Holler, Tyson Smith, Boris Zbarsky, Byron Campen, Julian Seward
,
Carsten Book, Gary Kwong, Jesse Ruderman, Andrew McCreight, and Phil
Ringnalda 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. (CVE-2016-2835, CVE-2016-2836)

A buffer overflow was discovered in the ClearKey Content Decryption
Module (CDM) during video playback. If a user were tricked in to opening
a specially crafted website, an attacker could potentially exploit this t
o
cause a denial of service via plugin process crash, or, in combination
with another vulnerability to escape the GMP sandbox, execute arbitrary
code. (CVE-2016-2837)

Atte Kettunen discovered a buffer overflow when rendering SVG content 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.
(CVE-2016-2838)

Bert Massop discovered a crash in Cairo with version 0.10 of FFmpeg. If a

user were tricked in to opening a specially crafted website, an attacker
could potentially exploit this to execute arbitrary code. (CVE-2016-2839)


Catalin Dumitru discovered that URLs of resources loaded after a
navigation start could be leaked to the following page via the Resource
Timing API. An attacker could potentially exploit this to obtain sensitiv
e
information. (CVE-2016-5250)

Firas Salem discovered an issue with non-ASCII and emoji characters in
data: URLs. An attacker could potentially exploit this to spoof the
addressbar contents. (CVE-2016-5251)

Georg Koppen discovered a stack buffer underflow during 2D graphics
rendering 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. (CVE-2016-5252)

Abhishek Arya discovered a use-after-free when the alt key is used with
top-level menus. 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. (CVE-2016-5254)


Jukka Jyl=C3=A4nki discovered a crash during garbage collection. If a use
r
were tricked in to opening a specially crafted website, an attacker could

potentially exploit this to execute arbitrary code. (CVE-2016-5255)

Looben Yang 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. (CVE-2016-5258)

Looben Yang discovered a use-after-free when working with nested sync
events in service workers. 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. (CVE-2016-5259)

Mike Kaply discovered that plain-text passwords can be stored in session
restore if an input field type is changed from "password" to "text" durin
g
a session, leading to information disclosure. (CVE-2016-5260)

Samuel Gro=C3=9F discovered an integer overflow in WebSockets during data

buffering 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. (CVE-2016-5261)

Nikita Arykov discovered that JavaScript event handlers on a <marquee>
element can execute in a sandboxed iframe without the allow-scripts flag
set. If a user were tricked in to opening a specially crafted website, an

attacker could potentially exploit this to conduct cross-site scripting
(XSS) attacks. (CVE-2016-5262)

A type confusion bug was discovered in display transformation during
rendering. 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. (CVE-2016-5263)


A use-after-free was discovered when applying effects to SVG elements 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.
(CVE-2016-5264)

Abdulrahman Alqabandi discovered a same-origin policy violation relating
to local HTML files and saved shortcut files. An attacker could
potentially exploit this to obtain sensitive information. (CVE-2016-5265)


Rafael Gieschke discovered an information disclosure issue related to
drag and drop. An attacker could potentially exploit this to obtain
sensitive information. (CVE-2016-5266)

A text injection issue was discovered with about: URLs. An attacker could

potentially exploit this to spoof internal error pages. (CVE-2016-5268)

Update instructions:

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

Ubuntu 16.04 LTS:
firefox 48.0+build2-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
firefox 48.0+build2-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
firefox 48.0+build2-0ubuntu0.12.04.1

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

References:
http://www.ubuntu.com/usn/usn-3044-1
CVE-2016-0718, CVE-2016-2830, CVE-2016-2835, CVE-2016-2836,
CVE-2016-2837, CVE-2016-2838, CVE-2016-2839, CVE-2016-5250,
CVE-2016-5251, CVE-2016-5252, CVE-2016-5254, CVE-2016-5255,
CVE-2016-5258, CVE-2016-5259, CVE-2016-5260, CVE-2016-5261,
CVE-2016-5262, CVE-2016-5263, CVE-2016-5264, CVE-2016-5265,
CVE-2016-5266, CVE-2016-5268

Package Information:
https://launchpad.net/ubuntu/+source/firefox/48.0+build2-0ubuntu0.16.04
.1
https://launchpad.net/ubuntu/+source/firefox/48.0+build2-0ubuntu0.14.04
.1
https://launchpad.net/ubuntu/+source/firefox/48.0+build2-0ubuntu0.12.04
.1



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