Security update for c-ares

Announcement ID: SUSE-SU-2021:2760-1
Rating: important
References:
Cross-References:
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
  • CVE-2021-3672 ( NVD ): 5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected Products:
  • Basesystem Module 15-SP2
  • Basesystem Module 15-SP3
  • SUSE CaaS Platform 4.0
  • SUSE Enterprise Storage 6
  • SUSE Linux Enterprise Desktop 15 SP2
  • SUSE Linux Enterprise Desktop 15 SP3
  • SUSE Linux Enterprise High Performance Computing 15
  • SUSE Linux Enterprise High Performance Computing 15 LTSS 15
  • SUSE Linux Enterprise High Performance Computing 15 SP1
  • SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS 15-SP1
  • SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS 15-SP1
  • SUSE Linux Enterprise High Performance Computing 15 SP2
  • SUSE Linux Enterprise High Performance Computing 15 SP3
  • SUSE Linux Enterprise Real Time 15 SP2
  • SUSE Linux Enterprise Real Time 15 SP3
  • SUSE Linux Enterprise Server 15
  • SUSE Linux Enterprise Server 15 LTSS 15
  • SUSE Linux Enterprise Server 15 SP1
  • SUSE Linux Enterprise Server 15 SP1 Business Critical Linux 15-SP1
  • SUSE Linux Enterprise Server 15 SP1 LTSS 15-SP1
  • SUSE Linux Enterprise Server 15 SP2
  • SUSE Linux Enterprise Server 15 SP2 Business Critical Linux 15-SP2
  • SUSE Linux Enterprise Server 15 SP3
  • SUSE Linux Enterprise Server 15 SP3 Business Critical Linux 15-SP3
  • SUSE Linux Enterprise Server ESPOS 15
  • SUSE Linux Enterprise Server for SAP Applications 15
  • SUSE Linux Enterprise Server for SAP Applications 15 SP1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP2
  • SUSE Linux Enterprise Server for SAP Applications 15 SP3
  • SUSE Manager Proxy 4.0
  • SUSE Manager Proxy 4.1
  • SUSE Manager Proxy 4.2
  • SUSE Manager Retail Branch Server 4.0
  • SUSE Manager Retail Branch Server 4.1
  • SUSE Manager Retail Branch Server 4.2
  • SUSE Manager Server 4.0
  • SUSE Manager Server 4.1
  • SUSE Manager Server 4.2

An update that solves one vulnerability can now be installed.

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

Patch Instructions:

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

  • Basesystem Module 15-SP2
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2021-2760=1
  • Basesystem Module 15-SP3
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP3-2021-2760=1
  • SUSE Linux Enterprise Server ESPOS 15
    zypper in -t patch SUSE-SLE-Product-HPC-15-2021-2760=1
  • SUSE Linux Enterprise High Performance Computing 15 LTSS 15
    zypper in -t patch SUSE-SLE-Product-HPC-15-2021-2760=1
  • SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS 15-SP1
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-2760=1
  • SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS 15-SP1
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-2760=1
  • SUSE Linux Enterprise Server 15 LTSS 15
    zypper in -t patch SUSE-SLE-Product-SLES-15-2021-2760=1
  • SUSE Linux Enterprise Server 15 SP1 Business Critical Linux 15-SP1
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-BCL-2021-2760=1
  • SUSE Linux Enterprise Server 15 SP1 LTSS 15-SP1
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-2760=1
  • SUSE Linux Enterprise Server for SAP Applications 15
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2021-2760=1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP1
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP1-2021-2760=1
  • SUSE Manager Proxy 4.0
    zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.0-2021-2760=1
  • SUSE Manager Retail Branch Server 4.0
    zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.0-2021-2760=1
  • SUSE Manager Server 4.0
    zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.0-2021-2760=1
  • SUSE Enterprise Storage 6
    zypper in -t patch SUSE-Storage-6-2021-2760=1
  • SUSE CaaS Platform 4.0
    To install this update, use the SUSE CaaS Platform 'skuba' tool. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

Package List:

  • Basesystem Module 15-SP2 (aarch64 ppc64le s390x x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • Basesystem Module 15-SP3 (aarch64 ppc64le s390x x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise Server ESPOS 15 (aarch64 x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (aarch64 x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS 15-SP1 (aarch64 x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS 15-SP1 (aarch64 x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise Server 15 LTSS 15 (aarch64 ppc64le s390x x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise Server 15 SP1 Business Critical Linux 15-SP1 (x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise Server 15 SP1 LTSS 15-SP1 (aarch64 ppc64le s390x x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise Server for SAP Applications 15 (ppc64le x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP1 (ppc64le x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Manager Proxy 4.0 (x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Manager Retail Branch Server 4.0 (x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Manager Server 4.0 (ppc64le s390x x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE Enterprise Storage 6 (aarch64 x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1
  • SUSE CaaS Platform 4.0 (x86_64)
    • libcares2-1.17.1+20200724-3.14.1
    • c-ares-debugsource-1.17.1+20200724-3.14.1
    • libcares2-debuginfo-1.17.1+20200724-3.14.1
    • c-ares-devel-1.17.1+20200724-3.14.1

References: