CVE-2021-26720

Severity CVSS v4.0:
Pending analysis
Type:
CWE-59 Link Following
Publication date:
17/02/2021
Last modified:
06/12/2022

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.

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:* 0.8-4 (including)
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*