Medium severity · published Jun 2, 2021
CVE-2021-3468
A flaw was found in avahi in versions 0.6 up to 0.8
5.5
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
Avahi · Avahi
0.6 through 0.8 · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3468
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3468
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1939614
Mailing List
https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/06/msg00028.html
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