5.3 Medium

CVE-2024-52616 Avahi: avahi wide-area dns predictable transaction ids

Description

A flaw was found in the Avahi-daemon, where it initializes DNS transaction IDs randomly only once at startup, incrementing them sequentially after that. This predictable behavior facilitates DNS spoofing attacks, allowing attackers to guess transaction IDs.

CVSS 3.1 detail

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitable remotely over the network, without an account and without any user action; the impact on data or service is limited.

Attack vector: Network
Attack complexity: Low
Privileges required: None
Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Affected products and versions

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 9	Versions not published
Red Hat Enterprise Linux 7	Versions not published
Red Hat Enterprise Linux 8	Versions not published
Red Hat OpenShift Container Platform 4	Versions not published
Red Hat In-Vehicle Operating System 1	Versions not published
avahi 0.9	earliest → < 0.9-rc2	0.9-rc2

References

RHSA-2025:7437 access.redhat.com
access.redhat.com access.redhat.com
RHBZ#2326429 bugzilla.redhat.com
github.com github.com

Timeline

Published November 21, 2024
Last modified November 5, 2026

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