Reachable assertion in avahi_dns_packet_append_record

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Summary

CVECVE-2023-38469
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-11-02 15:15:08 UTC
Updated2026-10-28 17:17:20 UTC
DescriptionA vulnerability was found in Avahi, where a reachable assertion exists in avahi_dns_packet_append_record.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.003220000 probability, percentile 0.252110000 (date 2026-10-29)

Problem Types: CWE-617 | CWE-617 Reachable Assertion

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1[email protected]Secondary6.2MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS6.2MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Avahi Avahi All All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 9.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Avahi Avahi affected 0.9-rc1 semver Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
CNA Fedora Fedora Not specified Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2024/12/msg00011.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
2191687 – (CVE-2023-38469) CVE-2023-38469 avahi: Reachable assertion in avahi_dns_packet_append_record af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-04-26T00:00:00.000ZReported to Red Hat.
CNA2023-04-26T00:00:00.000ZMade public.

Legacy QID Mappings

  • 161245 Oracle Enterprise Linux Security Update for avahi (ELSA-2023-7836)
  • 199923 Ubuntu Security Notification for Avahi Vulnerabilities (USN-6487-1)
  • 242623 Red Hat Update for avahi (RHSA-2023:7836)
  • 242747 Red Hat Update for avahi (RHSA-2024:0418)
  • 242797 Red Hat Update for avahi (RHSA-2024:0576)
  • 355757 Amazon Linux Security Advisory for avahi : ALAS-2023-1790
  • 355777 Amazon Linux Security Advisory for avahi : ALAS2-2023-2175
  • 355813 Amazon Linux Security Advisory for avahi : ALAS2023-2023-272
  • 379643 Alibaba Cloud Linux Security Update for avahi (ALINUX3-SA-2024:0035)
  • 510760 Alpine Linux Security Update for avahi
  • 673450 EulerOS Security Update for avahi (EulerOS-SA-2024-1116)
  • 673670 EulerOS Security Update for avahi (EulerOS-SA-2024-1191)
  • 673677 EulerOS Security Update for avahi (EulerOS-SA-2024-1053)
  • 673925 EulerOS Security Update for avahi (EulerOS-SA-2024-1077)
  • 673985 EulerOS Security Update for avahi (EulerOS-SA-2024-1171)
  • 673999 EulerOS Security Update for avahi (EulerOS-SA-2024-1101)
  • 756026 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2024:1008-1)
  • 756027 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2024:1014-1)
  • 941504 AlmaLinux Security Update for avahi (ALSA-2023:7836)

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