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AUSCERT External Security Bulletin Redistribution
USN-4026-1: Bind vulnerability
21 June 2019
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2019-6471
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USN-4026-1: Bind vulnerability
20 June 2019
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.10
o Ubuntu 18.04 LTS
Bind could be made to crash if it received specially crafted network traffic.
o bind9 - Internet Domain Name Server
It was discovered that Bind incorrectly handled certain malformed packets. A
remote attacker could possibly use this issue to cause Bind to crash, resulting
in a denial of service.
The problem can be corrected by updating your system to the following package
bind9 - 1:9.11.5.P1+dfsg-1ubuntu2.5
bind9 - 1:9.11.4+dfsg-3ubuntu5.4
Ubuntu 18.04 LTS
bind9 - 1:9.11.3+dfsg-1ubuntu1.8
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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