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Red Hat Enterprise Linux 7 RHSA-2018:2570-01 Important: Bind DoS

red hat
Calendar Grey August 27, 2018
Scroller Redhat
A critical patch for bind has been released, rectifying a denial of service vulnerability in CentOS 7.
An update for bind is now available for Red Hat Enterprise Linux 7

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

After installing the update, the BIND daemon (named) will be restarted automatically.

Summary

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
Security Fix(es):
* bind: processing of certain records when "deny-answer-aliases" is in use may trigger an assert leading to a denial of service (CVE-2018-5740)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Red Hat would like to thank ISC for reporting this issue. Upstream acknowledges Tony Finch (University of Cambridge) as the original reporter.

Topics%20covered

Topics Covered

security advisory denial of service security update bind security fix Red Hat Enterprise Linux important

References

https://access.redhat.com/security/cve/CVE-2018-5740 https://access.redhat.com/security/updates/classification#important https://kb.isc.org/docs/aa-01639

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: bind-9.9.4-61.el7_5.1.src.rpm
noarch: bind-license-9.9.4-61.el7_5.1.noarch.rpm
x86_64: bind-debuginfo-9.9.4-61.el7_5.1.i686.rpm bind-debuginfo-9.9.4-61.el7_5.1.x86_64.rpm bind-libs-9.9.4-61.el7_5.1.i686.rpm bind-libs-9.9.4-61.el7_5.1.x86_64.rpm bind-libs-lite-9.9.4-61.el7_5.1.i686.rpm bind-libs-lite-9.9.4-61.el7_5.1.x86_64.rpm bind-utils-9.9.4-61.el7_5.1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bind-9.9.4-61.el7_5.1.x86_64.rpm bind-chroot-9.9.4-61.el7_5.1.x86_64.rpm bind-debuginfo-9.9.4-61.el7_5.1.i686.rpm bind-debuginfo-9.9.4-61.el7_5.1.x86_64.rpm bind-devel-9.9.4-61.el7_5.1.i686.rpm bind-devel-9.9.4-61.el7_5.1.x86_64.rpm bind-lite-devel-9.9.4-61.el7_5.1.i686.rpm bind-lite-devel-9.9.4-61.el7_5.1.x86_64.rpm bind-pkcs11-9.9.4-61.el7_5.1.x86_64.rpm bind-pkcs11-devel-9.9.4-61.el7_5.1.i686.rpm bind-pkcs11-devel-9.9.4-61.el7_5.1.x86_64.rpm bind-pkcs11-libs-9.9.4-61.el7_5.1.i686.rpm bind-pkcs11-libs-9.9.4-61.el7_5.1.x86_64.rpm bind-pkcs11-utils-9.9.4-61.el7_5.1.x86_64.rpm bind-sdb-9.9.4-61.el7_5.1.x86_64.rpm bind-sdb-chroot-9.9.4-61.el7_5.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: bind-9.9.4-61.el7_5.1.src.rpm
noarch: bind-license-9.9.4-61.el7_5.1.noarch.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:2570-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2570
Issue date: 2018-08-27

Topic

An update for bind is now available for Red Hat Enterprise Linux 7.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 security update bind security fix Red Hat Enterprise Linux important

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x

Bugs Fixed

1613595 - CVE-2018-5740 bind: processing of certain records when "deny-answer-aliases" is in use may trigger an assert leading to a denial of service

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