[ubuntu/noble-updates] bind9 1:9.18.24-0ubuntu1 (Accepted)

[Steve Langasek]

bind9 (1:9.18.24-0ubuntu1) noble; urgency=medium

  * Updated to 9.18.21 to fix security issues.
    - Security Fixes:
      + Validating DNS messages containing a lot of DNSSEC signatures could
        cause excessive CPU load, leading to a denial-of-service condition.
        This has been fixed. (CVE-2023-50387)
      + Preparing an NSEC3 closest encloser proof could cause excessive CPU
        load, leading to a denial-of-service condition. This has been
        fixed. (CVE-2023-50868)
      + Parsing DNS messages with many different names could cause
        excessive CPU load. This has been fixed. (CVE-2023-4408)
      + Specific queries could cause named to crash with an assertion
        failure when nxdomain-redirect was enabled. This has been fixed.
        (CVE-2023-5517)
      + A bad interaction between DNS64 and serve-stale could cause named
        to crash with an assertion failure, when both of these features
        were enabled. This has been fixed. (CVE-2023-5679)
      + Under certain circumstances, the DNS-over-TLS client code
        incorrectly attempted to process more than one DNS message at a
        time, which could cause named to crash with an assertion failure.
        This has been fixed.
    - Bug Fixes:
      + The counters exported via the statistics channel were changed back
        to 64-bit signed values; they were being inadvertently truncated to
        unsigned 32-bit values since BIND 9.15.0.
    - See https://bind9.readthedocs.io/en/v9.18.24/notes.html for
      additional information

Date: 2024-02-14 23:02:09.333356+00:00
Changed-By: Marc Deslauriers <marc.deslauriers at canonical.com>
Signed-By: Steve Langasek <steve.langasek at canonical.com>
https://launchpad.net/ubuntu/+source/bind9/1:9.18.24-0ubuntu1
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