Vulnerabilities
Misconfiguration
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CVE Vulnerabilities

CVE-2021-3468

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Jun 02, 2021 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
6.2 MODERATE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-3468
CWEhttps://cwe.mitre.org/data/definitions/835.html

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.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

NameVendorStart VersionEnd Version
AvahiAvahi0.6 (including)0.8 (including)
Red Hat Enterprise Linux 8RedHatavahi-0:0.7-21.el8_9.1*
Red Hat Enterprise Linux 8RedHatavahi-0:0.7-21.el8_9.1*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatavahi-0:0.7-20.el8_6.3*
Red Hat Enterprise Linux 8.8 Extended Update SupportRedHatavahi-0:0.7-20.el8_8.4*
Red Hat Enterprise Linux 9RedHatavahi-0:0.8-15.el9*
Red Hat Enterprise Linux 9RedHatavahi-0:0.8-15.el9*
AvahiUbuntubionic*
AvahiUbuntudevel*
AvahiUbuntuesm-infra-legacy/trusty*
AvahiUbuntuesm-infra/bionic*
AvahiUbuntuesm-infra/focal*
AvahiUbuntuesm-infra/xenial*
AvahiUbuntufocal*
AvahiUbuntugroovy*
AvahiUbuntuhirsute*
AvahiUbuntuimpish*
AvahiUbuntujammy*
AvahiUbuntuprecise/esm*
AvahiUbuntutrusty*
AvahiUbuntutrusty/esm*
AvahiUbuntuupstream*
AvahiUbuntuxenial*

References

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