Upstream information

CVE-2019-6475 at MITRE

Description

Mirror zones are a BIND feature allowing recursive servers to pre-cache zone data provided by other servers. A mirror zone is similar to a zone of type secondary, except that its data is subject to DNSSEC validation before being used in answers, as if it had been looked up via traditional recursion, and when mirror zone data cannot be validated, BIND falls back to using traditional recursion instead of the mirror zone. However, an error in the validity checks for the incoming zone data can allow an on-path attacker to replace zone data that was validated with a configured trust anchor with forged data of the attacker's choosing. The mirror zone feature is most often used to serve a local copy of the root zone. If an attacker was able to insert themselves into the network path between a recursive server using a mirror zone and a root name server, this vulnerability could then be used to cause the recursive server to accept a copy of falsified root zone data. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.

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 5
Vector AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.5 5.9
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Access Vector Network Network
Access Complexity Low High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact High High
Availability Impact None None
CVSSv3 Version 3.1 3
SUSE Bugzilla entries: 1153993 [RESOLVED / INVALID], 1153994 [RESOLVED / INVALID]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • bind-devel >= 9.16.6-20.39
  • bind-utils >= 9.16.6-20.39
  • libbind9-1600 >= 9.16.6-20.39
  • libdns1605 >= 9.16.6-20.39
  • libirs-devel >= 9.16.6-20.39
  • libirs1601 >= 9.16.6-20.39
  • libisc1606 >= 9.16.6-20.39
  • libisccc1600 >= 9.16.6-20.39
  • libisccfg1600 >= 9.16.6-20.39
  • libns1604 >= 9.16.6-20.39
  • python3-bind >= 9.16.6-20.39
SUSE Linux Enterprise Module for Server Applications 15 SP3
  • bind >= 9.16.6-20.39
  • bind-chrootenv >= 9.16.6-20.39
  • bind-doc >= 9.16.6-20.39


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
SLES-LTSS-SAP bind Not affected
SUSE CaaS Platform 3.0 bind Not affected
SUSE CaaS Platform 4.0 bind In progress
SUSE Enterprise Storage 6 bind In progress
SUSE Linux Enterprise Desktop 12 SP4 bind Not affected
SUSE Linux Enterprise High Performance Computing 12 SP4 bind Affected
SUSE Linux Enterprise High Performance Computing 12 SP5 bind In progress
SUSE Linux Enterprise High Performance Computing 15 LTSS bind In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS bind In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS bind In progress
SUSE Linux Enterprise Module for Basesystem 15 bind Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 bind Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 bind In progress
SUSE Linux Enterprise Module for Basesystem 15 SP3 bind Analysis
SUSE Linux Enterprise Module for Server Applications 15 bind Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 bind Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 bind In progress
SUSE Linux Enterprise Module for Server Applications 15 SP3 bind Analysis
SUSE Linux Enterprise Server 11 SP1 bind Analysis
SUSE Linux Enterprise Server 11 SP3 bind Analysis
SUSE Linux Enterprise Server 11 SP4 bind Analysis
SUSE Linux Enterprise Server 11 SP4 LTSS bind Not affected
SUSE Linux Enterprise Server 12 SP1 LTSS bind Not affected
SUSE Linux Enterprise Server 12 SP2 LTSS bind Not affected
SUSE Linux Enterprise Server 12 SP3 LTSS bind Not affected
SUSE Linux Enterprise Server 12 SP4 bind Affected
SUSE Linux Enterprise Server 12 SP4 ESPOS bind In progress
SUSE Linux Enterprise Server 12 SP4 LTSS bind In progress
SUSE Linux Enterprise Server 12 SP5 bind In progress
SUSE Linux Enterprise Server 15 ESPOS bind In progress
SUSE Linux Enterprise Server 15 LTSS bind In progress
SUSE Linux Enterprise Server 15 SP1 LTSS bind In progress
SUSE Linux Enterprise Server BCL 12 SP2 bind Analysis
SUSE Linux Enterprise Server BCL 12 SP3 bind Analysis
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 bind In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP2 bind Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 bind Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 bind In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP5 bind In progress
SUSE Linux Enterprise Server for SAP Applications 15 bind In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 bind In progress
SUSE Linux Enterprise Software Development Kit 12 SP4 bind Affected
SUSE Linux Enterprise Software Development Kit 12 SP5 bind Affected
SUSE Manager Proxy 4.0 bind In progress
SUSE Manager Retail Branch Server 4.0 bind In progress
SUSE Manager Server 4.0 bind In progress
SUSE OpenStack Cloud 9 bind In progress
SUSE OpenStack Cloud Crowbar 9 bind In progress