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Ubuntu Security Notice USN-3112-1
October 27, 2016

thunderbird vulnerabilities
==========================================================================

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

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in Thunderbird.

Software Description:
- thunderbird: Mozilla Open Source mail and newsgroup client

Details:

Catalin Dumitru discovered that URLs of resources loaded after a
navigation start could be leaked to the following page via the Resource
Timing API. If a user were tricked in to opening a specially crafted
website in a browsing context, an attacker could potentially exploit this
to obtain sensitive information. (CVE-2016-5250)

Christoph Diehl, Andrew McCreight, Dan Minor, Byron Campen, Jon Coppeard,
Steve Fink, Tyson Smith, and Carsten Book discovered multiple memory
safety issues in Thunderbird. If a user were tricked in to opening a
specially crafted message, an attacker could potentially exploit these to
cause a denial of service via application crash, or execute arbitrary
code. (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 message, 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 a bad cast when processing layout with input
elements in some circumstances. If a user were tricked in to opening a
specially crafted website in a browsing context, an attacker could
potentially exploit this to cause a denial of service via application
crash, or execute arbitrary code. (CVE-2016-5272)

A use-after-free was discovered in web animations during restyling. If a
user were tricked in to opening a specially crafted website in a browsing
context, an attacker could potentially exploit this to cause a denial of
service via application crash, or execute arbitrary code. (CVE-2016-5274)

A use-after-free was discovered in accessibility. If a user were tricked
in to opening a specially crafted website in a browsing context, 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 in a browsing context, 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 message, an attacker could potentially exploit this to cause a
denial of service via application crash, or execute arbitrary code.
(CVE-2016-5278)

Mei Wang discovered a use-after-free when changing text direction. If a
user were tricked in to opening a specially crafted website in a browsing
context, 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 in a browsing context, an attacker could potentially
exploit this to cause a denial of service via application crash, or
execute arbitrary code. (CVE-2016-5281)

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 16.10:
  thunderbird                     1:45.4.0+build1-0ubuntu0.16.10.1

Ubuntu 16.04 LTS:
  thunderbird                     1:45.4.0+build1-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  thunderbird                     1:45.4.0+build1-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  thunderbird                     1:45.4.0+build1-0ubuntu0.12.04.1

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

References:
  https://www.ubuntu.com/usn/usn-3112-1
  CVE-2016-5250, CVE-2016-5257, CVE-2016-5270, CVE-2016-5272,
  CVE-2016-5274, CVE-2016-5276, CVE-2016-5277, CVE-2016-5278,
  CVE-2016-5280, CVE-2016-5281, CVE-2016-5284

Package Information:
  https://launchpad.net/ubuntu/+source/thunderbird/1:45.4.0+build1-0ubuntu0.16.10.1
  https://launchpad.net/ubuntu/+source/thunderbird/1:45.4.0+build1-0ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/1:45.4.0+build1-0ubuntu0.14.04.1
  https://launchpad.net/ubuntu/+source/thunderbird/1:45.4.0+build1-0ubuntu0.12.04.1