Home / mailings [USN-3076-1] Firefox vulnerabilities
Posted on 22 September 2016
Ubuntu Security==========================
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Ubuntu Security Notice USN-3076-1
September 22, 2016
firefox vulnerabilities
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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:
Atte Kettunen discovered an out-of-bounds read when handling certain
Content Security Policy (CSP) directives 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. (CVE-2016-2827)
Christoph Diehl, Christian Holler, Gary Kwong, Nathan Froyd, Honza Bambas=
,
Seth Fowler, Michael Smith, Andrew McCreight, Dan Minor, Byron Campen, Jo=
n
Coppeard, Steve Fink, Tyson Smith, and Carsten Book 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-2016-5256, CVE-2016-5257)
Atte Kettunen discovered a heap buffer overflow during text conversion
with some unicode characters. 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-2016-5270)
Abhishek Arya discovered an out of bounds read during the processing of
text runs 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. (CVE-2016-5271)
Abhishek Arya discovered a bad cast when processing layout with input
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-2016-5272)
A crash was discovered in accessibility. If a user were tricked in to
opening a specially crafted website, an attacker could potentially
exploit this to execute arbitrary code. (CVE-2016-5273)
A use-after-free was discovered in web animations during restyling. 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-2016-5274)
A buffer overflow was discovered when working with empty filters during
canvas rendering. If a user were tricked in to opening a specially crafte=
d
website, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code. (CVE-2016-5275)=
A use-after-free was discovered in accessibility. 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-2016-5276)
A use-after-free was discovered in web animations when destroying a
timeline. 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-2016-5277)=
A buffer overflow was discovered when encoding image frames to images 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-2016-5278)
Rafael Gieschke discovered that the full path of files is available to we=
b
pages after a drag and drop operation. An attacker could potentially
exploit this to obtain sensitive information. (CVE-2016-5279)
Mei Wang discovered a use-after-free when changing text direction. 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-2016-5280)
Brian Carpenter discovered a use-after-free when manipulating 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-2016-5281)
Richard Newman discovered that favicons can be loaded through
non-whitelisted protocols, such as jar:. (CVE-2016-5282)
Gavin Sharp discovered a timing attack vulnerability involving document
resizes and link colours. If a user were tricked in to opening a speciall=
y
crafted website, an attacker could potentially exploit this to obtain
sensitive information. (CVE-2016-5283)
An issue was discovered with the preloaded Public Key Pinning (HPKP). If
a man-in-the-middle (MITM) attacker was able to obtain a fraudulent
certificate for a Mozilla site, they could exploit this by providing
malicious addon updates. (CVE-2016-5284)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
firefox 49.0+build4-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
firefox 49.0+build4-0ubuntu0.14.04.1
Ubuntu 12.04 LTS:
firefox 49.0+build4-0ubuntu0.12.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-3076-1
CVE-2016-2827, CVE-2016-5256, CVE-2016-5257, CVE-2016-5270,
CVE-2016-5271, CVE-2016-5272, CVE-2016-5273, CVE-2016-5274,
CVE-2016-5275, CVE-2016-5276, CVE-2016-5277, CVE-2016-5278,
CVE-2016-5279, CVE-2016-5280, CVE-2016-5281, CVE-2016-5282,
CVE-2016-5283, CVE-2016-5284
Package Information:
https://launchpad.net/ubuntu/+source/firefox/49.0+build4-0ubuntu0.16.04=
=2E1
https://launchpad.net/ubuntu/+source/firefox/49.0+build4-0ubuntu0.14.04=
=2E1
https://launchpad.net/ubuntu/+source/firefox/49.0+build4-0ubuntu0.12.04=
=2E1
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