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Red Hat Enterprise Linux 6: RHSA-2010:0975-01 Critical: BIND DoS Risk

red hat
Calendar Grey December 13, 2010
Dist Redhat Esm H88
Newly issued bind packages are now released to tackle critical security vulnerabilities affecting Red Hat Enterprise Linux environments.
Updated bind packages that fix two security issues are now available for Red Hat Enterprise Linux 6

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

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.
It was discovered that named did not invalidate previously cached RRSIG records when adding an NCACHE record for the same entry to the cache. A remote attacker allowed to send recursive DNS queries to named could use this flaw to crash named. (CVE-2010-3613)
It was discovered that, in certain cases, named did not properly perform DNSSEC validation of an NS RRset for zones in the middle of a DNSKEY algorithm rollover. This flaw could cause the validator to incorrectly determine that the zone is insecure and not protected by DNSSEC. (CVE-2010-3614)
All BIND users are advised to upgrade to these updated packages, which contain a backported patch to resolve these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

Topics%20covered

Topics Covered

security advisory security issue Red Hat critical bind DoS DNS

References

https://access.redhat.com/security/cve/CVE-2010-3613 https://access.redhat.com/security/cve/CVE-2010-3614 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm bind-utils-9.7.0-5.P2.el6_0.1.i686.rpm
x86_64: bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-libs-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-utils-9.7.0-5.P2.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386: bind-9.7.0-5.P2.el6_0.1.i686.rpm bind-chroot-9.7.0-5.P2.el6_0.1.i686.rpm bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm bind-sdb-9.7.0-5.P2.el6_0.1.i686.rpm
x86_64: bind-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-chroot-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm bind-devel-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm bind-sdb-9.7.0-5.P2.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-libs-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-utils-9.7.0-5.P2.el6_0.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
x86_64: bind-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-chroot-9.7.0-5.P2.el6_0.1.x86_64.rpm bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2010:0975-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0975.html
Issue date: 2010-12-13

Topic

Updated bind packages that fix two security issues are now available forRed Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. Common Vulnerability Scoring System (CVSS) basescores, which give detailed severity ratings, are available for eachvulnerability from the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat critical bind DoS DNS

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

658974 - CVE-2010-3613 bind: failure to clear existing RRSIG records when a NO DATA is negatively cached could DoS named

658977 - CVE-2010-3614 bind: key algorithm rollover may mark secure answers as insecure

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