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AUSCERT External Security Bulletin Redistribution
USN-4197-1: Bind vulnerability
22 November 2019
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2019-6477
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USN-4197-1: Bind vulnerability
21 November 2019
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 19.04
o Ubuntu 18.04 LTS
Bind could be made to consume resources if it received specially crafted
o bind9 - Internet Domain Name Server
It was discovered that Bind incorrectly handled certain TCP-pipelined queries.
A remote attacker could possibly use this issue to cause Bind to consume
resources, resulting in a denial of service.
The problem can be corrected by updating your system to the following package
bind9 - 1:9.11.5.P4+dfsg-5.1ubuntu2.1
bind9 - 1:9.11.5.P1+dfsg-1ubuntu2.6
Ubuntu 18.04 LTS
bind9 - 1:9.11.3+dfsg-1ubuntu1.11
To update your system, please follow these instructions: https://
In general, a standard system update will make all the necessary changes.
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