1. Ubuntu Security Notices
  2. USN-6390-1

USN-6390-1: Bind vulnerabilities

Publication date

20 September 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. (CVE-2023-3341)

Robert Story discovered that Bind incorrectly handled certain DNS-over-TLS
queries. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS, and Ubuntu 23.04. (CVE-2023-4236)

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. (CVE-2023-3341)

Robert Story discovered that Bind incorrectly handled certain DNS-over-TLS
queries. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS, and Ubuntu 23.04. (CVE-2023-4236)

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
23.04 lunar bind9 –  1:9.18.12-1ubuntu1.2
22.04 jammy bind9 –  1:9.18.12-0ubuntu0.22.04.3
20.04 focal bind9 –  1:9.16.1-0ubuntu2.16

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References

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