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Ubuntu Security Notice USN-4054-2

Ubuntu Security Notice USN-4054-2
Posted Jul 26, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4054-2 - USN-4054-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problems. A sandbox escape was discovered in Firefox. If a user were tricked in to installing a malicious language pack, an attacker could exploit this to gain additional privileges. 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, obtain sensitive information, bypass same origin restrictions, conduct cross-site scripting attacks, conduct cross-site request forgery attacks, spoof origin attributes, spoof the addressbar contents, bypass safebrowsing protections, or execute arbitrary code. It was discovered that Firefox treats all files in a directory as same origin. If a user were tricked in to downloading a specially crafted HTML file, an attacker could potentially exploit this to obtain sensitive information from local files. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local, spoof, vulnerability, xss, csrf
systems | linux, ubuntu
advisories | CVE-2019-11711, CVE-2019-11715, CVE-2019-11719, CVE-2019-11724, CVE-2019-11729, CVE-2019-11730, CVE-2019-9811
SHA-256 | 9573711ae77b9f804c17bb7d87e64c1ac94e7240fc30836a442eedef386d1b66

Ubuntu Security Notice USN-4054-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4054-2
July 25, 2019

firefox regressions
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

USN-4054-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-4054-1 fixed vulnerabilities in Firefox. The update introduced
various minor regressions. This update fixes the problems.

We apologize for the inconvenience.

Original advisory details:

A sandbox escape was discovered in Firefox. If a user were tricked in to
installing a malicious language pack, an attacker could exploit this to
gain additional privileges. (CVE-2019-9811)

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, obtain sensitive
information, bypass same origin restrictions, conduct cross-site scripting
(XSS) attacks, conduct cross-site request forgery (CSRF) attacks, spoof
origin attributes, spoof the addressbar contents, bypass safebrowsing
protections, or execute arbitrary code. (CVE-2019-11709, CVE-2019-11710,
CVE-2019-11711, CVE-2019-11712, CVE-2019-11713, CVE-2019-11714,
CVE-2019-11715, CVE-2019-11716, CVE-2019-11717, CVE-2019-11718,
CVE-2019-11719, CVE-2019-11720, CVE-2019-11721, CVE-2019-11723,
CVE-2019-11724, CVE-2019-11725, CVE-2019-11727, CVE-2019-11728,
CVE-2019-11729)

It was discovered that Firefox treats all files in a directory as same
origin. If a user were tricked in to downloading a specially crafted HTML
file, an attacker could potentially exploit this to obtain sensitive
information from local files. (CVE-2019-11730)

Update instructions:

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

Ubuntu 19.04:
firefox 68.0.1+build1-0ubuntu0.19.04.1

Ubuntu 18.04 LTS:
firefox 68.0.1+build1-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
firefox 68.0.1+build1-0ubuntu0.16.04.1

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

References:
https://usn.ubuntu.com/4054-2
https://usn.ubuntu.com/4054-1
https://launchpad.net/bugs/1837941

Package Information:

https://launchpad.net/ubuntu/+source/firefox/68.0.1+build1-0ubuntu0.19.04.1

https://launchpad.net/ubuntu/+source/firefox/68.0.1+build1-0ubuntu0.18.04.1

https://launchpad.net/ubuntu/+source/firefox/68.0.1+build1-0ubuntu0.16.04.1


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