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Ubuntu Security Notice USN-6909-3
August 15, 2024

bind9 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Bind.

Software Description:
- bind9: Internet Domain Name Server

Details:

USN-6909-1 fixed vulnerabilities in Bind. This update provides
the corresponding updates for Ubuntu 16.04 LTS.

Original advisory details:

  Toshifumi Sakaguchi discovered that Bind incorrectly handled having a very
  large number of RRs existing at the same time. A remote attacker could
  possibly use this issue to cause Bind to consume resources, leading to a
  denial of service. (CVE-2024-1737)

  It was discovered that Bind incorrectly handled a large number of SIG(0)
  signed requests. A remote attacker could possibly use this issue to cause
  Bind to consume resources, leading to a denial of service. (CVE-2024-1975)

Update instructions:

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

Ubuntu 16.04 LTS
   bind9 1:9.10.3.dfsg.P4-8ubuntu1.19+esm9
                                   Available with Ubuntu Pro

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

References:
   https://ubuntu.com/security/notices/USN-6909-3
   https://ubuntu.com/security/notices/USN-6909-2
   https://ubuntu.com/security/notices/USN-6909-1
   CVE-2024-1737, CVE-2024-1975