Loop with Unreachable Exit Condition ('Infinite Loop') Affecting avahi-libs package, versions <0:0.7-20.el8_6.3


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL8-AVAHILIBS-6200096
  • published26 Jan 2024
  • disclosed10 Mar 2021

Introduced: 10 Mar 2021

CVE-2021-3468  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade RHEL:8 avahi-libs to version 0:0.7-20.el8_6.3 or higher.
This issue was patched in RHSA-2024:0418.

NVD Description

Note: Versions mentioned in the description apply only to the upstream avahi-libs package and not the avahi-libs package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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 Scores

version 3.1