RHEL 6 : bind (RHSA-2017:1582)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for bind is now available for Red Hat Enterprise Linux 6.2
Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update
Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, Red Hat
Enterprise Linux 6.5 Telco Extended Update Support, Red Hat Enterprise
Linux 6.6 Advanced Update Support, Red Hat Enterprise Linux 6.6 Telco
Extended Update Support, and Red Hat Enterprise Linux 6.7 Extended
Update Support.

Red Hat Product Security has rated this update as having a security
impact of Important. 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.

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 handled a query
response containing CNAME or DNAME resource records in an unusual
order. A remote attacker could use this flaw to make named exit
unexpectedly with an assertion failure via a specially crafted DNS
response. (CVE-2017-3137)

* A denial of service flaw was found in the way BIND handled DNSSEC
validation. A remote attacker could use this flaw to make named exit
unexpectedly with an assertion failure via a specially crafted DNS
response. (CVE-2017-3139)

Red Hat would like to thank ISC for reporting CVE-2017-3137.

Bug Fix(es) :

* ICANN is planning to perform a Root Zone DNSSEC Key Signing Key
(KSK) rollover during October 2017. Maintaining an up-to-date KSK, by
adding the new root zone KSK, is essential for ensuring that
validating DNS resolvers continue to function following the rollover.
(BZ#1458229, BZ#1458230, BZ#1458231, BZ#1458232, BZ#1458233)

See also :

https://www.redhat.com/security/data/cve/CVE-2017-3137.html
https://www.redhat.com/security/data/cve/CVE-2017-3139.html
https://kb.isc.org/article/AA-01466
http://rhn.redhat.com/errata/RHSA-2017-1582.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.4
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 101099 ()

Bugtraq ID:

CVE ID: CVE-2017-3137
CVE-2017-3139

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