What is CVE-2021-3468?

CVE-2021-3468 is a medium-severity vulnerability in Avahi, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2021-06-02.

How severe is CVE-2021-3468?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Avahi

CVE-2021-3468

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.

EPSS: 0.005 (37.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Avahi
Debian Debian_linux — versions 9.0
N/a Avahi — versions All avahi versions 0.6 up to 0.8

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

secalert@redhat.com (x_refsource_MISC, Issue Tracking)
secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
secalert@redhat.com

Frequently asked questions

What is CVE-2021-3468?: CVE-2021-3468 is a medium-severity vulnerability in Avahi, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2021-06-02.
How severe is CVE-2021-3468?: Medium severity. CVSS v3 base score is 5.5 out of 10.