[USN-7241-1] Bind vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-7241-1
January 29, 2025

bind9 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in Bind.

Software Description:
- bind9: Internet Domain Name Server

Details:

Toshifumi Sakaguchi discovered that Bind incorrectly handled many records
in the additional section. A remote attacker could possibly use this issue
to cause Bind to consume CPU resources, leading to a denial of service.
(CVE-2024-11187)

Jean-François Billaud discovered that the Bind DNS-over-HTTPS
implementation incorrectly handled a heavy query load. A remote attacker
could possibly use this issue to cause Bind to consume resources, leading
to a denial of service. (CVE-2024-12705)

Update instructions:

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

Ubuntu 24.10
bind9 1:9.20.0-2ubuntu3.1

Ubuntu 24.04 LTS
bind9 1:9.18.30-0ubuntu0.24.04.2

Ubuntu 22.04 LTS
bind9 1:9.18.30-0ubuntu0.22.04.2

Ubuntu 20.04 LTS
bind9 1:9.18.30-0ubuntu0.20.04.2

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

References:
https://ubuntu.com/security/notices/USN-7241-1
CVE-2024-11187, CVE-2024-12705

Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.20.0-2ubuntu3.1
https://launchpad.net/ubuntu/+source/bind9/1:9.18.30-0ubuntu0.24.04.2
https://launchpad.net/ubuntu/+source/bind9/1:9.18.30-0ubuntu0.22.04.2
https://launchpad.net/ubuntu/+source/bind9/1:9.18.30-0ubuntu0.20.04.2