openSUSE Security Update: Security update for avahi ______________________________________________________________________________ Announcement ID: openSUSE-SU-2021:1845-1 Rating: important References: #1180827 #1184521 Cross-References: CVE-2021-26720 CVE-2021-3468 CVSS scores: CVE-2021-26720 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-26720 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-3468 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-3468 (SUSE): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected Products: openSUSE Leap 15.3 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for avahi fixes the following issues: - CVE-2021-3468: avoid infinite loop by handling HUP event in client_work (bsc#1184521). - CVE-2021-26720: drop privileges when invoking avahi-daemon-check-dns.sh (bsc#1180827) - Update avahi-daemon-check-dns.sh from Debian. Our previous version relied on ifconfig, route, and init.d. - Add sudo to requires: used to drop privileges. Patch Instructions: To install this openSUSE 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: - openSUSE Leap 15.3: zypper in -t patch openSUSE-SLE-15.3-2021-1845=1 Package List: - openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64): python-avahi-0.6.32-5.13.1 python-avahi-gtk-0.6.32-5.13.1 References: https://www.suse.com/security/cve/CVE-2021-26720.html https://www.suse.com/security/cve/CVE-2021-3468.html https://bugzilla.suse.com/1180827 https://bugzilla.suse.com/1184521