Issued:
2013-02-21
Updated:
2013-02-21

RHSA-2013:0550 - Moderate: bind security and enhancement update

Synopsis

Moderate: bind security and enhancement update

Type/Severity

Security Advisory Moderate

Topic

Updated bind packages that fix one security issue and add one enhancement are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link 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. DNS64 is used to automatically generate DNS records so IPv6 based clients can access IPv4 systems through a NAT64 server.

A flaw was found in the DNS64 implementation in BIND when using Response Policy Zones (RPZ). If a remote attacker sent a specially-crafted query to a named server that is using RPZ rewrite rules, named could exit unexpectedly with an assertion failure. Note that DNS64 support is not enabled by default. (CVE-2012-5689)

This update also adds the following enhancement:

  • Previously, it was impossible to configure the the maximum number of responses sent per second to one client. This allowed remote attackers to conduct traffic amplification attacks using DNS queries with spoofed source IP addresses. With this update, it is possible to use the new "rate-limit" configuration option in named.conf and configure the maximum number of queries which the server responds to. Refer to the BIND documentation for more details about the "rate-limit" option. (BZ#906312)

All bind users are advised to upgrade to these updated packages, which contain patches to correct this issue and add this enhancement. 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 https://access.redhat.com/knowledge/articles/11258

Affected Products

ProductVersionArch
Red Hat Storage for Public Cloud (via RHUI)2.1x86_64
Red Hat Gluster Storage Server for On-premise2.1x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.4i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.4ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.4s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.4x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.4i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.4x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • bind-libs-9.8.2-0.17.rc1.el6.3.s390.rpm
  • bind-devel-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-chroot-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-libs-9.8.2-0.17.rc1.el6.3.ppc64.rpm
  • bind-libs-9.8.2-0.17.rc1.el6.3.ppc.rpm
  • bind-devel-9.8.2-0.17.rc1.el6.3.ppc.rpm
  • bind-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-devel-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-9.8.2-0.17.rc1.el6.3.ppc64.rpm
  • bind-sdb-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-devel-9.8.2-0.17.rc1.el6.3.ppc64.rpm
  • bind-debuginfo-9.8.2-0.17.rc1.el6.3.s390.rpm
  • bind-sdb-9.8.2-0.17.rc1.el6.3.ppc64.rpm
  • bind-chroot-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-debuginfo-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-debuginfo-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-sdb-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-debuginfo-9.8.2-0.17.rc1.el6.3.ppc.rpm
  • bind-chroot-9.8.2-0.17.rc1.el6.3.ppc64.rpm
  • bind-libs-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-chroot-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-libs-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-utils-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-utils-9.8.2-0.17.rc1.el6.3.i686.rpm
  • bind-utils-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-utils-9.8.2-0.17.rc1.el6.3.ppc64.rpm
  • bind-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-devel-9.8.2-0.17.rc1.el6.3.s390.rpm
  • bind-debuginfo-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-sdb-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-devel-9.8.2-0.17.rc1.el6.3.s390x.rpm
  • bind-libs-9.8.2-0.17.rc1.el6.3.x86_64.rpm
  • bind-9.8.2-0.17.rc1.el6.3.src.rpm
  • bind-debuginfo-9.8.2-0.17.rc1.el6.3.ppc64.rpm

Fixes

CVEs

References

Additional information