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Red Hat Enterprise Linux 8 Unbound Update RHSA-2020-2416-01 Critical DoS

red hat
Calendar Grey June 8, 2020
Scroller Redhat
A vital patch for unbound on CentOS has been released to tackle significant DNS vulnerabilities.
An update for unbound is now available for Red Hat Enterprise Linux 8

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 denial of service network security important red hat enterprise dns unbound

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 (v. 8):
Source: unbound-1.7.3-11.el8_2.src.rpm
aarch64: python3-unbound-1.7.3-11.el8_2.aarch64.rpm python3-unbound-debuginfo-1.7.3-11.el8_2.aarch64.rpm unbound-1.7.3-11.el8_2.aarch64.rpm unbound-debuginfo-1.7.3-11.el8_2.aarch64.rpm unbound-debugsource-1.7.3-11.el8_2.aarch64.rpm unbound-devel-1.7.3-11.el8_2.aarch64.rpm unbound-libs-1.7.3-11.el8_2.aarch64.rpm unbound-libs-debuginfo-1.7.3-11.el8_2.aarch64.rpm
ppc64le: python3-unbound-1.7.3-11.el8_2.ppc64le.rpm python3-unbound-debuginfo-1.7.3-11.el8_2.ppc64le.rpm unbound-1.7.3-11.el8_2.ppc64le.rpm unbound-debuginfo-1.7.3-11.el8_2.ppc64le.rpm unbound-debugsource-1.7.3-11.el8_2.ppc64le.rpm unbound-devel-1.7.3-11.el8_2.ppc64le.rpm unbound-libs-1.7.3-11.el8_2.ppc64le.rpm unbound-libs-debuginfo-1.7.3-11.el8_2.ppc64le.rpm
s390x: python3-unbound-1.7.3-11.el8_2.s390x.rpm python3-unbound-debuginfo-1.7.3-11.el8_2.s390x.rpm unbound-1.7.3-11.el8_2.s390x.rpm unbound-debuginfo-1.7.3-11.el8_2.s390x.rpm unbound-debugsource-1.7.3-11.el8_2.s390x.rpm unbound-devel-1.7.3-11.el8_2.s390x.rpm unbound-libs-1.7.3-11.el8_2.s390x.rpm unbound-libs-debuginfo-1.7.3-11.el8_2.s390x.rpm
x86_64: python3-unbound-1.7.3-11.el8_2.x86_64.rpm python3-unbound-debuginfo-1.7.3-11.el8_2.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2416-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2416
Issue date: 2020-06-08

Topic

An update for unbound is now available for Red Hat Enterprise Linux 8.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 denial of service network security important red hat enterprise dns unbound

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - 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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