Reachable Assertion Affecting avahi package, versions <0.8-r5


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-ALPINE319-AVAHI-6105624
  • published8 Dec 2023
  • disclosed7 May 2021

Introduced: 7 May 2021

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

How to fix?

Upgrade Alpine:3.19 avahi to version 0.8-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream avahi package and not the avahi package as distributed by Alpine. See How to fix? for Alpine:3.19 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