1. Ubuntu Security Notices
  2. USN-6421-1

USN-6421-1: Bind vulnerability

Publication date

9 October 2023

Overview

Bind could be made to crash if it received specially crafted network traffic.

Releases

Packages

  • bind9 - Internet Domain Name Server

Details

It was discovered that Bind incorrectly handled certain control channel
messages. A remote attacker with access to the control channel could
possibly use this issue to cause Bind to crash, resulting in a denial of
service.

It was discovered that Bind incorrectly handled certain control channel
messages. A remote attacker with access to the control channel could
possibly use this issue to cause Bind to crash, resulting in a denial of
service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.04 bionic bind9 –  1:9.11.3+dfsg-1ubuntu1.19+esm2  
libbind9-160 –  1:9.11.3+dfsg-1ubuntu1.19+esm2  
16.04 xenial bind9 –  1:9.10.3.dfsg.P4-8ubuntu1.19+esm7  
libbind9-140 –  1:9.10.3.dfsg.P4-8ubuntu1.19+esm7  
14.04 trusty bind9 –  1:9.9.5.dfsg-3ubuntu0.19+esm11  
libbind9-90 –  1:9.9.5.dfsg-3ubuntu0.19+esm11  

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References

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