CVE-2021-3468
avahi - security update
5.5
MEDIUM
CVSS 3.1
EPSS 0.03%
Description
A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.
How to fix CVE-2021-3468
To remediate CVE-2021-3468, upgrade the affected package to a fixed version below.
- —upgrade to 0.8-r1 or later
- —upgrade to 0.8-5+deb11u2 or later
- —upgrade to 0.7-4+deb10u3 or later
Is CVE-2021-3468 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 0.8-r1
- from 0, < 0.8-5+deb11u2
- from 0, < 0.7-4+deb10u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |