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SUSE: CVE-2021-26720: SUSE Linux Security Advisory

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SUSE: CVE-2021-26720: SUSE Linux Security Advisory

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
02/17/2021
Created
02/26/2021
Added
02/24/2021
Modified
10/22/2021

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)

  • suse-upgrade-avahi
  • suse-upgrade-avahi-autoipd
  • suse-upgrade-avahi-compat-howl-devel
  • suse-upgrade-avahi-compat-mdnsresponder-devel
  • suse-upgrade-avahi-lang
  • suse-upgrade-avahi-mono
  • suse-upgrade-avahi-utils
  • suse-upgrade-avahi-utils-gtk
  • suse-upgrade-libavahi-client3
  • suse-upgrade-libavahi-client3-32bit
  • suse-upgrade-libavahi-common3
  • suse-upgrade-libavahi-common3-32bit
  • suse-upgrade-libavahi-core7
  • suse-upgrade-libavahi-devel
  • suse-upgrade-libavahi-glib-devel
  • suse-upgrade-libavahi-glib1
  • suse-upgrade-libavahi-glib1-32bit
  • suse-upgrade-libavahi-gobject-devel
  • suse-upgrade-libavahi-gobject0
  • suse-upgrade-libavahi-qt4-1
  • suse-upgrade-libavahi-qt4-devel
  • suse-upgrade-libavahi-ui-gtk3-0
  • suse-upgrade-libavahi-ui0
  • suse-upgrade-libdns_sd
  • suse-upgrade-libdns_sd-32bit
  • suse-upgrade-libhowl0
  • suse-upgrade-python-avahi
  • suse-upgrade-python-avahi-gtk
  • suse-upgrade-python3-avahi
  • suse-upgrade-python3-avahi-gtk
  • suse-upgrade-typelib-1_0-avahi-0_6

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

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