Security update for dnsmasq

Announcement ID: SUSE-SU-2021:0163-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2020-25681 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2020-25681 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2020-25682 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2020-25682 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2020-25683 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2020-25683 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2020-25684 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
  • CVE-2020-25684 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  • CVE-2020-25685 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
  • CVE-2020-25685 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  • CVE-2020-25686 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
  • CVE-2020-25686 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  • CVE-2020-25687 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2020-25687 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • Basesystem Module 15-SP2
  • Basesystem Module 15-SP1
  • SUSE Linux Enterprise Desktop 15 SP1
  • SUSE Linux Enterprise Desktop 15 SP2
  • SUSE Linux Enterprise High Performance Computing 15 SP1
  • SUSE Linux Enterprise High Performance Computing 15 SP2
  • SUSE Linux Enterprise Real Time 15 SP1
  • SUSE Linux Enterprise Real Time 15 SP2
  • SUSE Linux Enterprise Server 15 SP1
  • SUSE Linux Enterprise Server 15 SP1 Business Critical Linux 15-SP1
  • SUSE Linux Enterprise Server 15 SP2
  • SUSE Linux Enterprise Server 15 SP2 Business Critical Linux 15-SP2
  • SUSE Linux Enterprise Server for SAP Applications 15 SP1
  • SUSE Linux Enterprise Server for SAP Applications 15 SP2
  • SUSE Manager Proxy 4.0
  • SUSE Manager Proxy 4.1
  • SUSE Manager Retail Branch Server 4.0
  • SUSE Manager Retail Branch Server 4.1
  • SUSE Manager Server 4.0
  • SUSE Manager Server 4.1

An update that solves seven vulnerabilities can now be installed.

Description:

This update for dnsmasq fixes the following issues:

  • bsc#1177077: Fixed DNSpooq vulnerabilities
  • CVE-2020-25684, CVE-2020-25685, CVE-2020-25686: Fixed multiple Cache Poisoning attacks.

  • CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687: Fixed multiple potential Heap-based overflows when DNSSEC is enabled.

  • Retry query to other servers on receipt of SERVFAIL rcode (bsc#1176076)

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-SP1
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP1-2021-163=1
  • Basesystem Module 15-SP2
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2021-163=1

Package List:

  • Basesystem Module 15-SP1 (aarch64 ppc64le s390x x86_64)
    • dnsmasq-2.78-7.6.1
    • dnsmasq-debuginfo-2.78-7.6.1
    • dnsmasq-debugsource-2.78-7.6.1
  • Basesystem Module 15-SP2 (aarch64 ppc64le s390x x86_64)
    • dnsmasq-2.78-7.6.1
    • dnsmasq-debuginfo-2.78-7.6.1
    • dnsmasq-debugsource-2.78-7.6.1

References: