Issued:
2021-05-03
Updated:
2021-05-03

RHSA-2021:1476 - Important: bind security update

Synopsis

Important: bind security update

Type/Severity

Security Advisory Important

Topic

An update for bind is now available for Red Hat Enterprise Linux 7.2 Advanced 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.

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.

Security Fix(es):

  • bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux Server - AUS7.2x86_64

Updated Packages

  • bind-license-9.9.4-29.el7_2.11.noarch.rpm
  • bind-chroot-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-libs-9.9.4-29.el7_2.11.i686.rpm
  • bind-lite-devel-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-devel-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-lite-devel-9.9.4-29.el7_2.11.i686.rpm
  • bind-pkcs11-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-pkcs11-devel-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-pkcs11-libs-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-pkcs11-utils-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-utils-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-sdb-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-pkcs11-libs-9.9.4-29.el7_2.11.i686.rpm
  • bind-9.9.4-29.el7_2.11.src.rpm
  • bind-libs-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-pkcs11-devel-9.9.4-29.el7_2.11.i686.rpm
  • bind-sdb-chroot-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-libs-lite-9.9.4-29.el7_2.11.i686.rpm
  • bind-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-libs-lite-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-devel-9.9.4-29.el7_2.11.i686.rpm
  • bind-debuginfo-9.9.4-29.el7_2.11.x86_64.rpm
  • bind-debuginfo-9.9.4-29.el7_2.11.i686.rpm

Fixes

CVEs

References

Additional information