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Ubuntu 7080-1: Unbound Security Advisory Updates

ubuntu
Calendar Grey October 22, 2024
Scroller Ubuntu
Unbound may cease operation with crafted DNS traffic. Fix by updating to the latest package versions provided.
Unbound could be made to stop responding if it received specially crafted DNS traffic.

Summary

Unbound could be made to stop responding if it received specially crafted

DNS traffic.

Software Description:

- unbound: validating, recursive, caching DNS resolver

Details:

Toshifumi Sakaguchi discovered that Unbound incorrectly handled name

compression for large RRsets, which could lead to excessive CPU usage.

An attacker could potentially use this issue to cause a denial of service

by sending specially crafted DNS responses.

Topics%20covered

Topics Covered

No topics assigned

Update Instructions

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

Ubuntu 24.10
   libunbound8                     1.20.0-1ubuntu2.1
   unbound                         1.20.0-1ubuntu2.1

Ubuntu 24.04 LTS
   libunbound8                     1.19.2-1ubuntu3.3
   unbound                         1.19.2-1ubuntu3.3

Ubuntu 22.04 LTS
   libunbound8                     1.13.1-1ubuntu5.8
   unbound                         1.13.1-1ubuntu5.8

Ubuntu 20.04 LTS
   libunbound8                     1.9.4-2ubuntu1.9
   unbound                         1.9.4-2ubuntu1.9

Ubuntu 18.04 LTS
   libunbound2                     1.6.7-1ubuntu2.6+esm3
                                   Available with Ubuntu Pro
   unbound                         1.6.7-1ubuntu2.6+esm3
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   libunbound2                     1.5.8-1ubuntu1.1+esm2
                                   Available with Ubuntu Pro
   unbound                         1.5.8-1ubuntu1.1+esm2
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   libunbound2                     1.4.22-1ubuntu4.14.04.3+esm2
                                   Available with Ubuntu Pro
   unbound                         1.4.22-1ubuntu4.14.04.3+esm2
                                   Available with Ubuntu Pro

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

References

  https://ubuntu.com/security/notices/USN-7080-1

  CVE-2024-8508

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7080-1

Topics%20covered

Topics Covered

No topics assigned

Package Information

  https://launchpad.net/ubuntu/+source/unbound/1.20.0-1ubuntu2.1
 
  https://launchpad.net/ubuntu/+source/unbound/1.13.1-1ubuntu5.8
  https://launchpad.net/ubuntu/+source/unbound/1.9.4-2ubuntu1.9

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