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Red Hat EL 7 RHSA-2017:0062-01 Critical: Bind DoS Threats

red hat
Calendar Grey January 16, 2017
Scroller Redhat
New patch released for Red Hat's bind to fix critical security flaws tied to denial of service risks.
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):
* A denial of service flaw was found in the way BIND processed a response to an ANY query. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. (CVE-2016-9131)
* A denial of service flaw was found in the way BIND handled a query response containing inconsistent DNSSEC information. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. (CVE-2016-9147)
* A denial of service flaw was found in the way BIND handled an unusually-formed DS record response. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. (CVE-2016-9444)
Red Hat would like to thank ISC for reporting these issues.

Topics%20covered

Topics Covered

security advisory Red Hat bind DoS DNS threat mitigation important security update

References

https://access.redhat.com/security/cve/CVE-2016-9131 https://access.redhat.com/security/cve/CVE-2016-9147 https://access.redhat.com/security/cve/CVE-2016-9444 https://access.redhat.com/security/updates/classification#important https://kb.isc.org/docs/aa-01439 https://kb.isc.org/docs/aa-01440 https://kb.isc.org/docs/aa-01441

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: bind-9.9.4-38.el7_3.1.src.rpm
noarch: bind-license-9.9.4-38.el7_3.1.noarch.rpm
x86_64: bind-debuginfo-9.9.4-38.el7_3.1.i686.rpm bind-debuginfo-9.9.4-38.el7_3.1.x86_64.rpm bind-libs-9.9.4-38.el7_3.1.i686.rpm bind-libs-9.9.4-38.el7_3.1.x86_64.rpm bind-libs-lite-9.9.4-38.el7_3.1.i686.rpm bind-libs-lite-9.9.4-38.el7_3.1.x86_64.rpm bind-utils-9.9.4-38.el7_3.1.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: bind-9.9.4-38.el7_3.1.x86_64.rpm bind-chroot-9.9.4-38.el7_3.1.x86_64.rpm bind-debuginfo-9.9.4-38.el7_3.1.i686.rpm bind-debuginfo-9.9.4-38.el7_3.1.x86_64.rpm bind-devel-9.9.4-38.el7_3.1.i686.rpm bind-devel-9.9.4-38.el7_3.1.x86_64.rpm bind-lite-devel-9.9.4-38.el7_3.1.i686.rpm bind-lite-devel-9.9.4-38.el7_3.1.x86_64.rpm bind-pkcs11-9.9.4-38.el7_3.1.x86_64.rpm bind-pkcs11-devel-9.9.4-38.el7_3.1.i686.rpm bind-pkcs11-devel-9.9.4-38.el7_3.1.x86_64.rpm bind-pkcs11-libs-9.9.4-38.el7_3.1.i686.rpm bind-pkcs11-libs-9.9.4-38.el7_3.1.x86_64.rpm bind-pkcs11-utils-9.9.4-38.el7_3.1.x86_64.rpm bind-sdb-9.9.4-38.el7_3.1.x86_64.rpm bind-sdb-chroot-9.9.4-38.el7_3.1.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: bind-9.9.4-38.el7_3.1.src.rpm
noarch: bind-license-9.9.4-38.el7_3.1.noarch.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:0062-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0062.html
Issue date: 2017-01-16

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 Red Hat bind DoS DNS threat mitigation important security update

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) - aarch64, noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, 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

Bugs Fixed

1411348 - CVE-2016-9131 bind: assertion failure while processing response to an ANY query

1411367 - CVE-2016-9147 bind: assertion failure while handling a query response containing inconsistent DNSSEC information

1411377 - CVE-2016-9444 bind: assertion failure while handling an unusually-formed DS record response

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