USN-5332-1: Bind vulnerabilities

17 March 2022

Several security issues were fixed in Bind.

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Releases

Packages

  • bind9 - Internet Domain Name Server

Details

Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind
incorrectly handled certain bogus NS records when using forwarders. A
remote attacker could possibly use this issue to manipulate cache results.
(CVE-2021-25220)

It was discovered that Bind incorrectly handled certain crafted TCP
streams. A remote attacker could possibly use this issue to cause Bind to
consume resources, leading to a denial of service. This issue only affected
Ubuntu 21.10. (CVE-2022-0396)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04

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

References

Related notices

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