Vulnerability Details : 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.
Products affected by CVE-2021-3468
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3468
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3468
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-3468
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2021-3468
-
https://bugzilla.redhat.com/show_bug.cgi?id=1939614
1939614 – (CVE-2021-3468) CVE-2021-3468 avahi: Local DoS by event-busy-loop from writing long lines to /run/avahi-daemon/socketIssue Tracking
-
https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html
[SECURITY] [DLA 3047-1] avahi security updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html
[SECURITY] [DLA 3466-1] avahi security update
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