Loop with Unreachable Exit Condition ('Infinite Loop') Affecting avahi-autoipd package, versions <0:0.6.31-20.amzn2.0.3


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-AMZN2-AVAHIAUTOIPD-6098878
  • published5 Dec 2023
  • disclosed2 Jun 2021

Introduced: 2 Jun 2021

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

How to fix?

Upgrade Amazon-Linux:2 avahi-autoipd to version 0:0.6.31-20.amzn2.0.3 or higher.
This issue was patched in ALAS2-2023-2372.

NVD Description

Note: Versions mentioned in the description apply only to the upstream avahi-autoipd package and not the avahi-autoipd package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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