Reachable Assertion Affecting avahi-compat-libdns_sd package, versions <0:0.8-15.el9


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-ALMALINUX9-AVAHICOMPATLIBDNSSD-6060506
  • published15 Nov 2023
  • disclosed7 Nov 2023

Introduced: 7 Nov 2023

CVE-2021-3502  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 avahi-compat-libdns_sd to version 0:0.8-15.el9 or higher.
This issue was patched in ALSA-2023:6707.

NVD Description

Note: Versions mentioned in the description apply only to the upstream avahi-compat-libdns_sd package and not the avahi-compat-libdns_sd package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.

CVSS Scores

version 3.1