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Ubuntu Security Notice USN-3991-1

Ubuntu Security Notice USN-3991-1
Posted May 21, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3991-1 - Multiple security issues were discovered 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, spoof the browser UI, trick the user in to launching local executable binaries, obtain sensitive information, conduct cross-site scripting attacks, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local, spoof, xss
systems | linux, ubuntu
advisories | CVE-2019-11691, CVE-2019-11695, CVE-2019-11696, CVE-2019-11697, CVE-2019-11698, CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9816, CVE-2019-9820, CVE-2019-9821
MD5 | d157c03ec1158e7291ba7c7c580166d3

Ubuntu Security Notice USN-3991-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3991-1
May 21, 2019

firefox 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:

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:

Multiple security issues were discovered 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, spoof the browser
UI, trick the user in to launching local executable binaries, obtain
sensitive information, conduct cross-site scripting (XSS) attacks, or
execute arbitrary code. (CVE-2019-11691, CVE-2019-11692, CVE-2019-11693,
CVE-2019-11695, CVE-2019-11696, CVE-2019-11699, CVE-2019-11701,
CVE-2019-7317, CVE-2019-9800, CVE-2019-9814, CVE-2019-9817, CVE-2019-9819,
CVE-2019-9820, CVE-2019-9821)

It was discovered that pressing certain key combinations could bypass
addon installation prompt delays. If a user opened a specially crafted
website, an attacker could potentially exploit this to trick them in to
installing a malicious extension. (CVE-2019-11697)

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 the 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)

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

Update instructions:

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

Ubuntu 19.04:
firefox 67.0+build2-0ubuntu0.19.04.1

Ubuntu 18.10:
firefox 67.0+build2-0ubuntu0.18.10.1

Ubuntu 18.04 LTS:
firefox 67.0+build2-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
firefox 67.0+build2-0ubuntu0.16.04.1

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

References:
https://usn.ubuntu.com/usn/usn-3991-1
CVE-2019-11691, CVE-2019-11692, CVE-2019-11693, CVE-2019-11695,
CVE-2019-11696, CVE-2019-11697, CVE-2019-11698, CVE-2019-11699,
CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9814,
CVE-2019-9816, CVE-2019-9817, CVE-2019-9819, CVE-2019-9820,
CVE-2019-9821

Package Information:
https://launchpad.net/ubuntu/+source/firefox/67.0+build2-0ubuntu0.19.04.1
https://launchpad.net/ubuntu/+source/firefox/67.0+build2-0ubuntu0.18.10.1
https://launchpad.net/ubuntu/+source/firefox/67.0+build2-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/67.0+build2-0ubuntu0.16.04.1
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