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From: Marc Deslauriers
Reply-To: Ubuntu Security
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <4f648f1a-707e-9c59-af8b-e76be0ef2eaa@canonical.com>
Subject: [USN-3956-1] Bind vulnerability
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==========================================================================
Ubuntu Security Notice USN-3956-1
April 25, 2019
bind9 vulnerability
==========================================================================
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:
Bind could be made to consume resources if it received specially crafted
network traffic.
Software Description:
- bind9: Internet Domain Name Server
Details:
It was discovered that Bind incorrectly handled limiting the number of
simultaneous TCP clients. A remote attacker could possibly use this issue
to cause Bind to consume resources, leading to a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.04:
bind9 1:9.11.5.P1+dfsg-1ubuntu2.3
Ubuntu 18.10:
bind9 1:9.11.4+dfsg-3ubuntu5.3
Ubuntu 18.04 LTS:
bind9 1:9.11.3+dfsg-1ubuntu1.7
Ubuntu 16.04 LTS:
bind9 1:9.10.3.dfsg.P4-8ubuntu1.14
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3956-1
CVE-2018-5743
Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.11.5.P1+dfsg-1ubuntu2.3
https://launchpad.net/ubuntu/+source/bind9/1:9.11.4+dfsg-3ubuntu5.3
https://launchpad.net/ubuntu/+source/bind9/1:9.11.3+dfsg-1ubuntu1.7
https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-8ubuntu1.14
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