Moderate: bind security, bug fix, and enhancement update

Related Vulnerabilities: CVE-2019-6477   CVE-2019-6477   CVE-2019-6477  

Synopsis

Moderate: bind security, bug fix, and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

An update for bind is now available for Red Hat Enterprise Linux 8.

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

The following packages have been upgraded to a later upstream version: bind (9.11.13). (BZ#1704328)

Security Fix(es):

  • bind: TCP Pipelining doesn't limit TCP clients on a single connection (CVE-2019-6477)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from 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

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le
  • Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

  • BZ - 1664863 - [RFE] named: stale-answer support
  • BZ - 1679766 - system test dnssec: Bind algorithm ED448 is broken
  • BZ - 1704328 - Rebase bind to latest minor release 9.11.13
  • BZ - 1759845 - python-bind's isc.parsetab must be regenerated after python-ply has been updated
  • BZ - 1773617 - CVE-2019-6477 bind: TCP Pipelining doesn't limit TCP clients on a single connection
  • BZ - 1790879 - named allocates new memory on each reload

CVEs

References