Issued:
2010-12-13
Updated:
2010-12-13

RHSA-2010:0976 - Important: bind security update

Synopsis

Important: bind security update

Type/Severity

Security Advisory Important

Topic

Updated bind packages that fix three security issues are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

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)

A flaw was found in the DNSSEC validation code in named. If named had multiple trust anchors configured for a zone, a response to a request for a record in that zone with a bad signature could cause named to crash. (CVE-2010-3762)

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 backported patches to resolve these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

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 This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • bind-9.3.6-4.P1.el5_5.3.src.rpm
  • bind-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-sdb-9.3.6-4.P1.el5_5.3.ppc.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-chroot-9.3.6-4.P1.el5_5.3.ppc.rpm
  • bind-chroot-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-9.3.6-4.P1.el5_5.3.ppc.rpm
  • caching-nameserver-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.s390.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-utils-9.3.6-4.P1.el5_5.3.ppc.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.ppc64.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • caching-nameserver-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • bind-sdb-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.ppc64.rpm
  • bind-utils-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-sdb-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.s390.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.ppc64.rpm
  • bind-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.ppc.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.ppc.rpm
  • caching-nameserver-9.3.6-4.P1.el5_5.3.ppc.rpm
  • bind-utils-9.3.6-4.P1.el5_5.3.s390x.rpm
  • caching-nameserver-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-utils-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.s390.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-sdb-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • bind-libbind-devel-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • bind-chroot-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.ppc.rpm
  • bind-utils-9.3.6-4.P1.el5_5.3.x86_64.rpm
  • caching-nameserver-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-devel-9.3.6-4.P1.el5_5.3.ia64.rpm
  • bind-sdb-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.s390x.rpm
  • bind-chroot-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-libs-9.3.6-4.P1.el5_5.3.i386.rpm
  • bind-chroot-9.3.6-4.P1.el5_5.3.ia64.rpm

Fixes

CVEs

References

Additional information