CVE-2021-3468
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.
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- avahi/avahi · debian/debian linux
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1939614Issue Tracking
- https://lists.debian.org/debian-lts-announce/2022/06/msg00009.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1939614Issue Tracking
- https://lists.debian.org/debian-lts-announce/2022/06/msg00009.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.