Operating System:

[SUSE]

Published:

24 February 2021

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0682
                         Security update for avahi
                             24 February 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           avahi
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Create Arbitrary Files -- Existing Account
                   Denial of Service      -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-26720  

Reference:         ESB-2021.0674

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2021/suse-su-20210563-1

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SUSE Security Update: Security update for avahi

______________________________________________________________________________

Announcement ID:   SUSE-SU-2021:0563-1
Rating:            moderate
References:        #1180827
Cross-References:  CVE-2021-26720
Affected Products:
                   SUSE Linux Enterprise Workstation Extension 12-SP5
                   SUSE Linux Enterprise Software Development Kit 12-SP5
                   SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________

An update that fixes one vulnerability is now available.

Description:

This update for avahi fixes the following issues:

  o CVE-2021-26720: drop privileges when invoking avahi-daemon-check-dns.sh
    (bsc#1180827)
  o Add sudo to requires: used to drop privileges.

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation
methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  o SUSE Linux Enterprise Workstation Extension 12-SP5:
    zypper in -t patch SUSE-SLE-WE-12-SP5-2021-563=1
  o SUSE Linux Enterprise Software Development Kit 12-SP5:
    zypper in -t patch SUSE-SLE-SDK-12-SP5-2021-563=1
  o SUSE Linux Enterprise Server 12-SP5:
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-563=1

Package List:

  o SUSE Linux Enterprise Workstation Extension 12-SP5 (x86_64):
       avahi-glib2-debugsource-0.6.32-32.12.3
       libavahi-gobject0-0.6.32-32.12.3
       libavahi-gobject0-debuginfo-0.6.32-32.12.3
       libavahi-ui-gtk3-0-0.6.32-32.12.3
       libavahi-ui-gtk3-0-debuginfo-0.6.32-32.12.3
       libavahi-ui0-0.6.32-32.12.3
       libavahi-ui0-debuginfo-0.6.32-32.12.3
  o SUSE Linux Enterprise Software Development Kit 12-SP5 (aarch64 ppc64le
    s390x x86_64):
       avahi-compat-howl-devel-0.6.32-32.12.2
       avahi-compat-mDNSResponder-devel-0.6.32-32.12.2
       avahi-debuginfo-0.6.32-32.12.2
       avahi-debugsource-0.6.32-32.12.2
       avahi-glib2-debugsource-0.6.32-32.12.3
       libavahi-devel-0.6.32-32.12.2
       libavahi-glib-devel-0.6.32-32.12.3
       libavahi-gobject-devel-0.6.32-32.12.3
       libavahi-gobject0-0.6.32-32.12.3
       libavahi-gobject0-debuginfo-0.6.32-32.12.3
       libavahi-ui-gtk3-0-0.6.32-32.12.3
       libavahi-ui-gtk3-0-debuginfo-0.6.32-32.12.3
       libavahi-ui0-0.6.32-32.12.3
       libavahi-ui0-debuginfo-0.6.32-32.12.3
       libhowl0-0.6.32-32.12.2
       libhowl0-debuginfo-0.6.32-32.12.2
       python-avahi-0.6.32-32.12.2
       typelib-1_0-Avahi-0_6-0.6.32-32.12.3
  o SUSE Linux Enterprise Server 12-SP5 (aarch64 ppc64le s390x x86_64):
       avahi-0.6.32-32.12.2
       avahi-debuginfo-0.6.32-32.12.2
       avahi-debugsource-0.6.32-32.12.2
       avahi-glib2-debugsource-0.6.32-32.12.3
       avahi-utils-0.6.32-32.12.2
       avahi-utils-debuginfo-0.6.32-32.12.2
       libavahi-client3-0.6.32-32.12.2
       libavahi-client3-debuginfo-0.6.32-32.12.2
       libavahi-common3-0.6.32-32.12.2
       libavahi-common3-debuginfo-0.6.32-32.12.2
       libavahi-core7-0.6.32-32.12.2
       libavahi-core7-debuginfo-0.6.32-32.12.2
       libavahi-glib1-0.6.32-32.12.3
       libavahi-glib1-debuginfo-0.6.32-32.12.3
       libdns_sd-0.6.32-32.12.2
       libdns_sd-debuginfo-0.6.32-32.12.2
  o SUSE Linux Enterprise Server 12-SP5 (s390x x86_64):
       avahi-debuginfo-32bit-0.6.32-32.12.2
       libavahi-client3-32bit-0.6.32-32.12.2
       libavahi-client3-debuginfo-32bit-0.6.32-32.12.2
       libavahi-common3-32bit-0.6.32-32.12.2
       libavahi-common3-debuginfo-32bit-0.6.32-32.12.2
       libavahi-glib1-32bit-0.6.32-32.12.3
       libavahi-glib1-debuginfo-32bit-0.6.32-32.12.3
       libdns_sd-32bit-0.6.32-32.12.2
       libdns_sd-debuginfo-32bit-0.6.32-32.12.2
  o SUSE Linux Enterprise Server 12-SP5 (noarch):
       avahi-lang-0.6.32-32.12.2


References:

  o https://www.suse.com/security/cve/CVE-2021-26720.html
  o https://bugzilla.suse.com/1180827

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