Home / mailings [USN-2936-1] Firefox vulnerabilities
Posted on 27 April 2016
Ubuntu Security==========================
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Ubuntu Security Notice USN-2936-1
April 27, 2016
firefox vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 15.10
- 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:
Christian Holler, Tyson Smith, Phil Ringalda, Gary Kwong, Jesse Ruderman,=
Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, Randell Jesup,
Andrew McCreight, and Steve Fink 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-2016-2804, CVE-2016-2806,
CVE-2016-2807)
An invalid write was discovered when using the JavaScript .watch() method=
in
some circumstances. If a user were tricked in to opening a specially craf=
ted
website, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code with the
privileges of the user invoking Firefox. (CVE-2016-2808)
Looben Yang discovered a use-after-free and buffer overflow in service
workers. 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-2016-2811, CVE-2016-2812)
Sascha Just discovered a buffer overflow in libstagefright 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
privileges of the user invoking Firefox. (CVE-2016-2814)
Muneaki Nishimura discovered that CSP is not applied correctly to web
content sent with the multipart/x-mixed-replace MIME type. An attacker
could potentially exploit this to conduct cross-site scripting (XSS)
attacks when they would otherwise be prevented. (CVE-2016-2816)
Muneaki Nishimura discovered that the chrome.tabs.update API for web
extensions allows for navigation to javascript: URLs. A malicious
extension could potentially exploit this to conduct cross-site scripting
(XSS) attacks. (CVE-2016-2817)
Mark Goodwin discovered that about:healthreport accepts certain events
from any content present in the remote-report iframe. If another
vulnerability allowed the injection of web content in the remote-report
iframe, an attacker could potentially exploit this to change the user's
sharing preferences. (CVE-2016-2820)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
firefox 46.0+build5-0ubuntu0.16.04.2
Ubuntu 15.10:
firefox 46.0+build5-0ubuntu0.15.10.2
Ubuntu 14.04 LTS:
firefox 46.0+build5-0ubuntu0.14.04.2
Ubuntu 12.04 LTS:
firefox 46.0+build5-0ubuntu0.12.04.2
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2936-1
CVE-2016-2804, CVE-2016-2806, CVE-2016-2807, CVE-2016-2808,
CVE-2016-2811, CVE-2016-2812, CVE-2016-2814, CVE-2016-2816,
CVE-2016-2820, CVE-2018-2817
Package Information:
https://launchpad.net/ubuntu/+source/firefox/46.0+build5-0ubuntu0.16.04=
=2E2
https://launchpad.net/ubuntu/+source/firefox/46.0+build5-0ubuntu0.15.10=
=2E2
https://launchpad.net/ubuntu/+source/firefox/46.0+build5-0ubuntu0.14.04=
=2E2
https://launchpad.net/ubuntu/+source/firefox/46.0+build5-0ubuntu0.12.04=
=2E2
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