=========================================================================Ubuntu Security Notice USN-3997-1
May 28, 2019

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Thunderbird.

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

Details:

Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
bypass same-origin protections, or execute arbitrary code.
(CVE-2019-18511, CVE-2019-11691, CVE-2019-11692, CVE-2019-11693,
CVE-2019-9797, CVE-2019-9800, CVE-2019-9817, CVE-2019-9819, CVE-2019-9820)

Multiple security issues were discovered 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, or execute
arbitrary code. (CVE-2019-5798, CVE-2019-7317)

A type confusion bug was discovered with object groups and UnboxedObjects.
If a user were tricked in to opening a specially crafted website in a
browsing context after enabling the UnboxedObjects feature, an attacker
could potentially exploit this to bypass security checks. (CVE-2019-9816)

It was discovered that history data could be exposed via drag and drop
of hyperlinks to and from bookmarks. If a user were tricked in to dragging
a specially crafted hyperlink to a bookmark toolbar or sidebar, and
subsequently back in to the web content area, an attacker could
potentially exploit this to obtain sensitive information. (CVE-2019-11698)

Update instructions:

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

Ubuntu 19.04:
  thunderbird                     1:60.7.0+build1-0ubuntu0.19.04.1

Ubuntu 18.10:
  thunderbird                     1:60.7.0+build1-0ubuntu0.18.10.1

Ubuntu 18.04 LTS:
  thunderbird                     1:60.7.0+build1-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  thunderbird                     1:60.7.0+build1-0ubuntu0.16.04.1

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

References:
  https://ubuntu.com/security/notices/USN-3997-1
  CVE-2018-18511, CVE-2019-11691, CVE-2019-11692, CVE-2019-11693,
  CVE-2019-11698, CVE-2019-5798, CVE-2019-7317, CVE-2019-9797,
  CVE-2019-9800, CVE-2019-9816, CVE-2019-9817, CVE-2019-9819,
  CVE-2019-9820

Package Information:
 
https://launchpad.net/ubuntu/+source/thunderbird/1:60.7.0+build1-0ubuntu0.19.04.1
 
https://launchpad.net/ubuntu/+source/thunderbird/1:60.7.0+build1-0ubuntu0.18.10.1
 
https://launchpad.net/ubuntu/+source/thunderbird/1:60.7.0+build1-0ubuntu0.18.04.1
 
https://launchpad.net/ubuntu/+source/thunderbird/1:60.7.0+build1-0ubuntu0.16.04.1