Upstream information

CVE-2020-14312 at MITRE

Description

A flaw was found in the default configuration of dnsmasq, as shipped with Fedora versions prior to 31 and in all versions Red Hat Enterprise Linux, where it listens on any interface and accepts queries from addresses outside of its local subnet. In particular, the option `local-service` is not enabled. Running dnsmasq in this manner may inadvertently make it an open resolver accessible from any address on the internet. This flaw allows an attacker to conduct a Distributed Denial of Service (DDoS) against other systems.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.3
Vector AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.9 4
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L
Access Vector Network Network
Access Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Changed
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High Low
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1173646 [IN_PROGRESS]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE CaaS Platform 4.0
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SUSE-CAASP-4.0-2021-3530
SUSE Enterprise Storage 6
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-Storage-6-2021-3530
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-3530
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-3530
SUSE Linux Enterprise Module for Basesystem 15 SP2
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP2-2021-3530
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP3-2021-3530
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2
  • dnsmasq-utils >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2021-3530
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP3
  • dnsmasq-utils >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP3-2021-3530
SUSE Linux Enterprise Server 15 SP1-BCL
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Product-SLES-15-SP1-BCL-2021-3530
SUSE Linux Enterprise Server 15 SP1-LTSS
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-3530
SUSE Linux Enterprise Server for SAP Applications 15 SP1
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP1-2021-3530
SUSE MicroOS 5.0
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SUSE-MicroOS-5.0-2021-3530
SUSE MicroOS 5.1
  • dnsmasq >= 2.86-7.14.1
Patchnames:
SUSE-SUSE-MicroOS-5.1-2021-3530
openSUSE Leap 15.3
  • dnsmasq >= 2.86-7.14.1
  • dnsmasq-utils >= 2.86-7.14.1
Patchnames:
openSUSE-SLE-15.3-2021-3530


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SLE-HPC (12) dnsmasq Affected
SLES (12) dnsmasq Affected
SLES-BCL (12) dnsmasq Affected
SLES-LTSS (12) dnsmasq Affected
SLES-LTSS (15) dnsmasq Affected
SLES_BCL (15) dnsmasq Released
SLES_SAP (12) dnsmasq Affected
SLES_SAP (15) dnsmasq Released
SLE_HPC-ESPOS (15) dnsmasq Affected
SLE_HPC-LTSS (15) dnsmasq Released
SUSE-MicroOS (5.0) dnsmasq Released
SUSE-MicroOS (5.1) dnsmasq Released
SUSE_SLES_LTSS (11) dnsmasq Affected
caasp (4.0) dnsmasq Released
hpe-helion-openstack (8) dnsmasq Affected
hpe-helion-openstack-cloud-8 (n/a) dnsmasq Affected
ses (6) dnsmasq Released
sle-module-basesystem (15) dnsmasq Released
suse-openstack-cloud (7) dnsmasq Unsupported
suse-openstack-cloud (8) dnsmasq Affected
suse-openstack-cloud (9) dnsmasq Affected
suse-openstack-cloud-crowbar (8) dnsmasq Affected
suse-openstack-cloud-crowbar (9) dnsmasq Affected
suse-openstack-cloud-ltss (6) dnsmasq Affected