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Debian: CVE-2021-26720: avahi -- security update

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Debian: CVE-2021-26720: avahi -- security update

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
02/17/2021
Created
06/10/2022
Added
06/09/2022
Modified
06/09/2022

Description

avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product.

Solution(s)

  • debian-upgrade-avahi

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