Vulnerability · Published Nov 2, 2023 · Assigned by redhat
CVE-2023-38473Reachable assertion in avahi_alternative_host_name
Medium 6.2
In plain English
A medium-severity security flaw in avahi from avahi. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.3%top 74.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in Avahi. A reachable assertion exists in the avahi_alternative_host_name() function.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | avahi | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-autoipd | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:8 | avahi-compat-howl | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-compat-howl | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-compat-howl-devel | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-compat-howl-devel | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-compat-libdns_sd | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-compat-libdns_sd | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-compat-libdns_sd-devel | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-compat-libdns_sd-devel | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-devel | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-devel | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-glib | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-glib | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-glib-devel | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-glib-devel | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-gobject | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:8 | avahi-gobject-devel | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:8 | avahi-libs | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-libs | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-tools | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:9 | avahi-tools | 0.8-20.el9 | ALSA-2024:2433 |
| AlmaLinux:8 | avahi-ui | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:8 | avahi-ui-devel | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:8 | avahi-ui-gtk3 | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| AlmaLinux:8 | python3-avahi | 0.7-21.el8_9.1 | ALSA-2023:7836 |
| Alpine:v3.20 | avahi | 0.8-r14 | ALPINE-CVE-2023-38473 |
| Alpine:v3.21 | avahi | 0.8-r14 | ALPINE-CVE-2023-38473 |
| Alpine:v3.22 | avahi | 0.8-r14 | ALPINE-CVE-2023-38473 |
| Alpine:v3.23 | avahi | 0.8-r14 | ALPINE-CVE-2023-38473 |
| Alpine:v3.24 | avahi | 0.8-r14 | ALPINE-CVE-2023-38473 |
| Debian:12 | avahi | 0.8-10+deb12u1 | DEBIAN-CVE-2023-38473 |
| Debian:13 | avahi | 0.8-14 | DEBIAN-CVE-2023-38473 |
| Debian:14 | avahi | 0.8-14 | DEBIAN-CVE-2023-38473 |
| Rocky Linux:8 | avahi | 0:0.7-21.el8_9.1 | RLSA-2023:7836 |
| Ubuntu:22.04:LTS | avahi | 0.8-5ubuntu5.2 | UBUNTU-CVE-2023-38473 |
| Ubuntu:22.04:LTS | avahi | 0.8-5ubuntu5.2 | USN-6487-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| avahi | avahi | 0 – before 0.9-rc1 |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Fedora | Fedora | see references |
Weakness: CWE-617 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2023-38473 vdb-entry, x_refsource_REDHAT
- RHBZ#2191694 issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2024/12/msg00011.html