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Red Hat: RHSA-2020-2419-01 Important: Unbound DNS Security Threats

red hat
Calendar Grey June 8, 2020
Dist Redhat Esm H88
Crucial alert from Red Hat highlights significant unbound security patch tackling critical vulnerabilities. Discover more about what this means for users.
An update for unbound is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.
Security Fix(es):
* unbound: amplification of an incoming query into a large number of queries directed to a target (CVE-2020-12662)
* unbound: infinite loop via malformed DNS answers received from upstream servers (CVE-2020-12663)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat important DNS amplification unbound loop issue

References

https://access.redhat.com/security/cve/CVE-2020-12662 https://access.redhat.com/security/cve/CVE-2020-12663 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.1):
Source: unbound-1.7.3-9.el8_1.src.rpm
aarch64: python3-unbound-1.7.3-9.el8_1.aarch64.rpm python3-unbound-debuginfo-1.7.3-9.el8_1.aarch64.rpm unbound-1.7.3-9.el8_1.aarch64.rpm unbound-debuginfo-1.7.3-9.el8_1.aarch64.rpm unbound-debugsource-1.7.3-9.el8_1.aarch64.rpm unbound-devel-1.7.3-9.el8_1.aarch64.rpm unbound-libs-1.7.3-9.el8_1.aarch64.rpm unbound-libs-debuginfo-1.7.3-9.el8_1.aarch64.rpm
ppc64le: python3-unbound-1.7.3-9.el8_1.ppc64le.rpm python3-unbound-debuginfo-1.7.3-9.el8_1.ppc64le.rpm unbound-1.7.3-9.el8_1.ppc64le.rpm unbound-debuginfo-1.7.3-9.el8_1.ppc64le.rpm unbound-debugsource-1.7.3-9.el8_1.ppc64le.rpm unbound-devel-1.7.3-9.el8_1.ppc64le.rpm unbound-libs-1.7.3-9.el8_1.ppc64le.rpm unbound-libs-debuginfo-1.7.3-9.el8_1.ppc64le.rpm
s390x: python3-unbound-1.7.3-9.el8_1.s390x.rpm python3-unbound-debuginfo-1.7.3-9.el8_1.s390x.rpm unbound-1.7.3-9.el8_1.s390x.rpm unbound-debuginfo-1.7.3-9.el8_1.s390x.rpm unbound-debugsource-1.7.3-9.el8_1.s390x.rpm unbound-devel-1.7.3-9.el8_1.s390x.rpm unbound-libs-1.7.3-9.el8_1.s390x.rpm unbound-libs-debuginfo-1.7.3-9.el8_1.s390x.rpm
x86_64: python3-unbound-1.7.3-9.el8_1.x86_64.rpm python3-unbound-debuginfo-1.7.3-9.el8_1.i686.rpm python3-unbound-debuginfo-1.7.3-9.el8_1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2419-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2419
Issue date: 2020-06-08

Topic

An update for unbound is now available for Red Hat Enterprise Linux 8.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat important DNS amplification unbound loop issue

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.1) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1837597 - CVE-2020-12662 unbound: amplification of an incoming query into a large number of queries directed to a target

1837604 - CVE-2020-12663 unbound: infinite loop via malformed DNS answers received from upstream servers

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