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USN-5257-2: ldns vulnerabilities

4 October 2022

ldns could be made to expose sensitive information if it received a specially crafted input.

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Releases

Packages

  • ldns - ldns library for DNS programming

Details

USN-5257-1 fixed several vulnerabilities in ldns. This update provides
the corresponding update for Ubuntu 20.04 ESM and Ubuntu 22.04 ESM.

Original advisory details:

It was discovered that ldns incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2020-19860, CVE-2020-19861)

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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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 22.04
Ubuntu 20.04

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

References

Related notices

  • USN-5257-1: ldns, python3-ldns, ldnsutils, libldns1, libldns-dev, libldns2, python-ldns

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Further reading