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Ubuntu 24.04 LTS USN-6791-1: Critical Unbound Denial Of Service

ubuntu
Calendar Grey May 28, 2024
Dist Ubuntu Esm H88
On June 15, 2024, Fedora released a security notice regarding OpenSSL, which could potentially lead to unauthorized access vulnerabilities.
Unbound could be made to take part in a denial of service attack.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 23.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Unbound could be made to take part in a denial of service attack. Software Description: - unbound: validating, recursive, caching DNS resolver Details: It was discovered that Unbound could take part in a denial of service amplification attack known as DNSBomb. This update introduces certain resource limits to make the impact from Unbound significantly lower.

Topics%20covered

Topics Covered

security advisory denial of service critical vulnerability ubuntu unbound

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS libunbound8 1.19.2-1ubuntu3.1 unbound 1.19.2-1ubuntu3.1 Ubuntu 23.10 libunbound8 1.17.1-2ubuntu0.2 unbound 1.17.1-2ubuntu0.2 Ubuntu 22.04 LTS libunbound8 1.13.1-1ubuntu5.5 unbound 1.13.1-1ubuntu5.5 Ubuntu 20.04 LTS libunbound8 1.9.4-2ubuntu1.6 unbound 1.9.4-2ubuntu1.6 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6791-1

CVE-2024-33655

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6791-1

Topics%20covered

Topics Covered

security advisory denial of service critical vulnerability ubuntu unbound

Package Information

https://launchpad.net/ubuntu/+source/unbound/1.19.2-1ubuntu3.1 https://launchpad.net/ubuntu/+source/unbound/1.17.1-2ubuntu0.2 https://launchpad.net/ubuntu/+source/unbound/1.13.1-1ubuntu5.5 https://launchpad.net/ubuntu/+source/unbound/1.9.4-2ubuntu1.6

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