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Red Hat Security Advisory 2020-1716-01

Red Hat Security Advisory 2020-1716-01
Posted Apr 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1716-01 - The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Issues addressed include a code execution vulnerability.

tags | advisory, code execution
systems | linux, redhat
advisories | CVE-2019-18934
SHA-256 | 431a341bee1b9d3365a146a81849e0b2404590b354ee9e3659963b78da661a84

Red Hat Security Advisory 2020-1716-01

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====================================================================
Red Hat Security Advisory

Synopsis: Moderate: unbound security update
Advisory ID: RHSA-2020:1716-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1716
Issue date: 2020-04-28
CVE Names: CVE-2019-18934
====================================================================
1. Summary:

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 impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The unbound packages provide a validating, recursive, and caching DNS or
DNSSEC resolver.

Security Fix(es):

* unbound: command injection with data coming from a specially crafted
IPSECKEY answer (CVE-2019-18934)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.2 Release Notes linked from the References section.

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1775708 - High CPU consumption when log file I/O is slow
1776762 - CVE-2019-18934 unbound: command injection with data coming from a specially crafted IPSECKEY answer

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
unbound-1.7.3-10.el8.src.rpm

aarch64:
python3-unbound-1.7.3-10.el8.aarch64.rpm
python3-unbound-debuginfo-1.7.3-10.el8.aarch64.rpm
unbound-1.7.3-10.el8.aarch64.rpm
unbound-debuginfo-1.7.3-10.el8.aarch64.rpm
unbound-debugsource-1.7.3-10.el8.aarch64.rpm
unbound-devel-1.7.3-10.el8.aarch64.rpm
unbound-libs-1.7.3-10.el8.aarch64.rpm
unbound-libs-debuginfo-1.7.3-10.el8.aarch64.rpm

ppc64le:
python3-unbound-1.7.3-10.el8.ppc64le.rpm
python3-unbound-debuginfo-1.7.3-10.el8.ppc64le.rpm
unbound-1.7.3-10.el8.ppc64le.rpm
unbound-debuginfo-1.7.3-10.el8.ppc64le.rpm
unbound-debugsource-1.7.3-10.el8.ppc64le.rpm
unbound-devel-1.7.3-10.el8.ppc64le.rpm
unbound-libs-1.7.3-10.el8.ppc64le.rpm
unbound-libs-debuginfo-1.7.3-10.el8.ppc64le.rpm

s390x:
python3-unbound-1.7.3-10.el8.s390x.rpm
python3-unbound-debuginfo-1.7.3-10.el8.s390x.rpm
unbound-1.7.3-10.el8.s390x.rpm
unbound-debuginfo-1.7.3-10.el8.s390x.rpm
unbound-debugsource-1.7.3-10.el8.s390x.rpm
unbound-devel-1.7.3-10.el8.s390x.rpm
unbound-libs-1.7.3-10.el8.s390x.rpm
unbound-libs-debuginfo-1.7.3-10.el8.s390x.rpm

x86_64:
python3-unbound-1.7.3-10.el8.x86_64.rpm
python3-unbound-debuginfo-1.7.3-10.el8.i686.rpm
python3-unbound-debuginfo-1.7.3-10.el8.x86_64.rpm
unbound-1.7.3-10.el8.x86_64.rpm
unbound-debuginfo-1.7.3-10.el8.i686.rpm
unbound-debuginfo-1.7.3-10.el8.x86_64.rpm
unbound-debugsource-1.7.3-10.el8.i686.rpm
unbound-debugsource-1.7.3-10.el8.x86_64.rpm
unbound-devel-1.7.3-10.el8.i686.rpm
unbound-devel-1.7.3-10.el8.x86_64.rpm
unbound-libs-1.7.3-10.el8.i686.rpm
unbound-libs-1.7.3-10.el8.x86_64.rpm
unbound-libs-debuginfo-1.7.3-10.el8.i686.rpm
unbound-libs-debuginfo-1.7.3-10.el8.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2019-18934
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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