openSUSE Security Update: Security update for c-ares ______________________________________________________________________________ Announcement ID: openSUSE-SU-2021:1168-1 Rating: important References: #1188881 Cross-References: CVE-2021-3672 CVSS scores: CVE-2021-3672 (SUSE): 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Affected Products: openSUSE Leap 15.2 ______________________________________________________________________________ An update that fixes one vulnerability is now available. Description: This update for c-ares fixes the following issues: Version update to git snapshot 1.17.1+20200724: - CVE-2021-3672: fixed missing input validation on hostnames returned by DNS servers (bsc#1188881) - If ares_getaddrinfo() was terminated by an ares_destroy(), it would cause crash - Crash in sortaddrinfo() if the list size equals 0 due to an unexpected DNS response - Expand number of escaped characters in DNS replies as per RFC1035 5.1 to prevent spoofing - Use unbuffered /dev/urandom for random data to prevent early startup performance issues This update was imported from the SUSE:SLE-15:Update update project. 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 15.2: zypper in -t patch openSUSE-2021-1168=1 Package List: - openSUSE Leap 15.2 (i586 x86_64): c-ares-debugsource-1.17.1+20200724-lp152.2.9.1 c-ares-devel-1.17.1+20200724-lp152.2.9.1 c-ares-utils-1.17.1+20200724-lp152.2.9.1 c-ares-utils-debuginfo-1.17.1+20200724-lp152.2.9.1 libcares2-1.17.1+20200724-lp152.2.9.1 libcares2-debuginfo-1.17.1+20200724-lp152.2.9.1 - openSUSE Leap 15.2 (x86_64): libcares2-32bit-1.17.1+20200724-lp152.2.9.1 libcares2-32bit-debuginfo-1.17.1+20200724-lp152.2.9.1 References: https://www.suse.com/security/cve/CVE-2021-3672.html https://bugzilla.suse.com/1188881