Bug 2279942 (CVE-2024-33655) - CVE-2024-33655 unbound: DNSBomb vulnerability
Summary: CVE-2024-33655 unbound: DNSBomb vulnerability
Keywords:
Status: NEW
Alias: CVE-2024-33655
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2279944
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-05-10 04:03 UTC by Avinash Hanwate
Modified: 2026-05-19 13:19 UTC (History)
0 users

Fixed In Version: Unbound 1.20.0
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:18556 0 None None None 2026-05-19 09:05:45 UTC
Red Hat Product Errata RHSA-2026:18931 0 None None None 2026-05-19 13:19:28 UTC

Description Avinash Hanwate 2024-05-10 04:03:24 UTC 
The DNSBomb attack, via specially timed DNS queries and answers, can cause a Denial of Service on resolvers and spoofed targets.

Unbound itself is not vulnerable for DoS, rather it can be used to take part in a pulsing DoS amplification attack.
Comment 1 Avinash Hanwate 2024-05-10 04:08:19 UTC 
Created unbound tracking bugs for this issue:

Affects: fedora-all [bug 2279944]
Comment 3 errata-xmlrpc 2026-05-19 09:05:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:18556 https://access.redhat.com/errata/RHSA-2026:18556
Comment 4 errata-xmlrpc 2026-05-19 13:19:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:18931 https://access.redhat.com/errata/RHSA-2026:18931
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