CVE-2021-3502

MEDIUM

avahi 0.8-5 - Denial of Service via Invalid Hostname Resolution

Title source: llm

Description

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.

References (2)

Core 2

Core References

Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_misc

https://bugzilla.redhat.com/show_bug.cgi?id=1946914

Exploit, Third Party Advisory x_refsource_misc

https://github.com/lathiat/avahi/issues/338

Scores

CVSS v3 5.5

EPSS 0.0037

EPSS Percentile 29.0%

Attack Vector LOCAL

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

Details

CWE

CWE-617

Status published

Products (1)

avahi/avahi 0.8-5

Published May 07, 2021

Tracked Since Feb 18, 2026