The following updates has been released for Ubuntu Linux:
USN-3918-4: Firefox regressions
USN-3949-1: OpenJDK 11 vulnerability
USN-3918-4: Firefox regressions
USN-3949-1: OpenJDK 11 vulnerability
USN-3918-4: Firefox regressions
==========================================================================
Ubuntu Security Notice USN-3918-4
April 16, 2019
firefox regressions
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
USN-3918-1 caused a regression in Firefox.
Software Description:
- firefox: Mozilla Open Source web browser
Details:
USN-3918-1 fixed vulnerabilities in Firefox. The update caused web
compatibility and performance issues with some websites. This update fixes
the problem.
We apologize for the inconvenience.
Original advisory 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 via application
crash, denial of service via successive FTP authorization prompts or modal
alerts, trick the user with confusing permission request prompts, obtain
sensitive information, conduct social engineering attacks, or execute
arbitrary code. (CVE-2019-9788, CVE-2019-9789, CVE-2019-9790,
CVE-2019-9791, CVE-2019-9792, CVE-2019-9795, CVE-2019-9796, CVE-2019-9797,
CVE-2019-9799, CVE-2019-9802, CVE-2019-9805, CVE-2019-9806, CVE-2019-9807,
CVE-2019-9808, CVE-2019-9809)
A mechanism was discovered that removes some bounds checking for string,
array, or typed array accesses if Spectre mitigations have been disabled.
If a user were tricked in to opening a specially crafted website with
Spectre mitigations disabled, an attacker could potentially exploit this
to cause a denial of service, or execute arbitrary code. (CVE-2019-9793)
It was discovered that Upgrade-Insecure-Requests was incorrectly enforced
for same-origin navigation. An attacker could potentially exploit this to
conduct man-in-the-middle (MITM) attacks. (CVE-2019-9803)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
firefox 66.0.3+build1-0ubuntu0.18.10.1
Ubuntu 18.04 LTS:
firefox 66.0.3+build1-0ubuntu0.18.04.1
Ubuntu 16.04 LTS:
firefox 66.0.3+build1-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
firefox 66.0.3+build1-0ubuntu0.14.04.1
After a standard system update you need to restart Firefox to make
all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3918-4
https://usn.ubuntu.com/usn/usn-3918-1
https://launchpad.net/bugs/1825051
Package Information:
https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.18.10.1
https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/66.0.3+build1-0ubuntu0.14.04.1
USN-3949-1: OpenJDK 11 vulnerability
=========================================================================
Ubuntu Security Notice USN-3949-1
April 16, 2019
openjdk-lts vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
Summary:
Java applets or applications could be made to expose sensitive
information.
Software Description:
- openjdk-lts: Open Source Java implementation
Details:
It was discovered that a memory disclosure issue existed in the OpenJDK
Library subsystem. An attacker could use this to expose sensitive
information and possibly bypass Java sandbox restrictions. (CVE-2019-2422)
Please note that with this update, the OpenJDK package in Ubuntu
18.04 LTS has transitioned from OpenJDK 10 to OpenJDK 11. Several
additional packages were updated to be compatible with OpenJDK 11.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
openjdk-11-jdk 11.0.2+9-3ubuntu1~18.04.3
openjdk-11-jre 11.0.2+9-3ubuntu1~18.04.3
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any Java
applications or applets to make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3949-1
CVE-2019-2422
Package Information:
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.2+9-3ubuntu1~18.04.3
