Reachable assertion in avahi_alternative_host_name
Summary
| CVE | CVE-2023-38473 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2023-11-02 16:15:08 UTC |
| Updated | 2026-10-28 17:17:21 UTC |
| Description | A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function. |
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: 0.003200000 probability, percentile 0.249080000 (date 2026-10-29)
Problem Types: CWE-617 | CWE-617 Reachable Assertion
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 6.2 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 6.2 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS: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)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| 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
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| 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
| Reference | Source | Link | Tags |
|---|---|---|---|
| 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 |
| 2191694 – (CVE-2023-38473) CVE-2023-38473 avahi: Reachable assertion in avahi_alternative_host_name | 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 |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2023-04-26T00:00:00.000Z | Reported to Red Hat. |
| CNA | 2023-04-26T00:00:00.000Z | Made 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)
- 356789 Amazon Linux Security Advisory for avahi : ALAS2023-2023-455
- 379643 Alibaba Cloud Linux Security Update for avahi (ALINUX3-SA-2024:0035)
- 510759 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)
- 755297 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2023:4499-1)
- 755306 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2023:4503-1)
- 755489 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2023:4910-1)
- 755490 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2023:4910-1)
- 755491 SUSE Enterprise Linux Security Update for avahi (SUSE-SU-2023:4910-1)
- 941504 AlmaLinux Security Update for avahi (ALSA-2023:7836)