The following updates has been released for Ubuntu Linux:
USN-3876-1: Avahi vulnerabilities
USN-3876-2: Avahi vulnerabilities
USN-3877-1: LibVNCServer vulnerabilities
USN-3876-1: Avahi vulnerabilities
USN-3876-2: Avahi vulnerabilities
USN-3877-1: LibVNCServer vulnerabilities
USN-3876-1: Avahi vulnerabilities
==========================================================================
Ubuntu Security Notice USN-3876-1
January 31, 2019
avahi vulnerabilities
==========================================================================
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:
Several security issues were fixed in Avahi.
Software Description:
- avahi: Avahi IPv4LL network address configuration daemon
Details:
Chad Seaman discovered that Avahi incorrectly handled certain messages.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2017-6519, CVE-2018-1000845)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
avahi-daemon 0.7-4ubuntu2.1
libavahi-core7 0.7-4ubuntu2.1
Ubuntu 18.04 LTS:
avahi-daemon 0.7-3.1ubuntu1.2
libavahi-core7 0.7-3.1ubuntu1.2
Ubuntu 16.04 LTS:
avahi-daemon 0.6.32~rc+dfsg-1ubuntu2.3
libavahi-core7 0.6.32~rc+dfsg-1ubuntu2.3
Ubuntu 14.04 LTS:
avahi-daemon 0.6.31-4ubuntu1.3
libavahi-core7 0.6.31-4ubuntu1.3
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3876-1
CVE-2017-6519, CVE-2018-1000845
Package Information:
https://launchpad.net/ubuntu/+source/avahi/0.7-4ubuntu2.1
https://launchpad.net/ubuntu/+source/avahi/0.7-3.1ubuntu1.2
https://launchpad.net/ubuntu/+source/avahi/0.6.32~rc+dfsg-1ubuntu2.3
https://launchpad.net/ubuntu/+source/avahi/0.6.31-4ubuntu1.3
USN-3876-2: Avahi vulnerabilities
==========================================================================
Ubuntu Security Notice USN-3876-2
January 31, 2019
avahi vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in Avahi.
Software Description:
- avahi: Avahi IPv4LL network address configuration daemon
Details:
USN-3876-1 fixed a vulnerability in Avahi. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Chad Seaman discovered that Avahi incorrectly handled certain
messages.
An attacker could possibly use this issue to cause a denial of
service.
(CVE-2017-6519, CVE-2018-1000845)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
avahi-daemon 0.6.30-5ubuntu2.3
libavahi-core7 0.6.30-5ubuntu2.3
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3876-2
https://usn.ubuntu.com/usn/usn-3876-1
CVE-2017-6519, CVE-2018-1000845
USN-3877-1: LibVNCServer vulnerabilities
==========================================================================
Ubuntu Security Notice USN-3877-1
January 31, 2019
libvncserver vulnerabilities
==========================================================================
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:
Several security issues were fixed in LibVNCServer.
Software Description:
- libvncserver: vnc server library
Details:
It was discovered that LibVNCServer incorrectly handled certain operations.
A remote attacker able to connect to applications using LibVNCServer could
possibly use this issue to obtain sensitive information, cause a denial of
service, or execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
libvncclient1 0.9.11+dfsg-1.1ubuntu0.1
libvncserver1 0.9.11+dfsg-1.1ubuntu0.1
Ubuntu 18.04 LTS:
libvncclient1 0.9.11+dfsg-1ubuntu1.1
libvncserver1 0.9.11+dfsg-1ubuntu1.1
Ubuntu 16.04 LTS:
libvncclient1 0.9.10+dfsg-3ubuntu0.16.04.3
libvncserver1 0.9.10+dfsg-3ubuntu0.16.04.3
Ubuntu 14.04 LTS:
libvncserver0 0.9.9+dfsg-1ubuntu1.4
After a standard system update you need to restart LibVNCServer
applications to make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3877-1
CVE-2018-15126, CVE-2018-15127, CVE-2018-20019, CVE-2018-20020,
CVE-2018-20021, CVE-2018-20022, CVE-2018-20023, CVE-2018-20024,
CVE-2018-20748, CVE-2018-20749, CVE-2018-20750, CVE-2018-6307
Package Information:
https://launchpad.net/ubuntu/+source/libvncserver/0.9.11+dfsg-1.1ubuntu0.1
https://launchpad.net/ubuntu/+source/libvncserver/0.9.11+dfsg-1ubuntu1.1
https://launchpad.net/ubuntu/+source/libvncserver/0.9.10+dfsg-3ubuntu0.16.04.3
https://launchpad.net/ubuntu/+source/libvncserver/0.9.9+dfsg-1ubuntu1.4
