bind9 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary
Bind could be made to crash if it received specially crafted network traffic.
Software Description
- bind9 - Internet Domain Name Server
Details
It was discovered that Bind incorrectly handled the deny-answer-aliases feature. If this feature is enabled, a remote attacker could use this issue to cause Bind to crash, resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.04 LTS
- bind9 - 1:9.11.3+dfsg-1ubuntu1.2
- Ubuntu 16.04 LTS
- bind9 - 1:9.10.3.dfsg.P4-8ubuntu1.11
- Ubuntu 14.04 LTS
- bind9 - 1:9.9.5.dfsg-3ubuntu0.18
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.