Loop with Unreachable Exit Condition ('Infinite Loop') Affecting avahi-compat-libdns_sd-devel package, versions <0:0.7-21.el8_9.1


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ALMALINUX8-AVAHICOMPATLIBDNSSDDEVEL-6129151
  • published15 Dec 2023
  • disclosed14 Dec 2023

Introduced: 14 Dec 2023

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

How to fix?

Upgrade AlmaLinux:8 avahi-compat-libdns_sd-devel to version 0:0.7-21.el8_9.1 or higher.
This issue was patched in ALSA-2023:7836.

NVD Description

Note: Versions mentioned in the description apply only to the upstream avahi-compat-libdns_sd-devel package and not the avahi-compat-libdns_sd-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux: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