RHSA-2019:2057 - Security Advisory

Topic

An update for bind is now available for Red Hat Enterprise Linux 7.

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 (9.11.4). (BZ#1640561)

Security Fix(es):

• bind: Incorrect documentation of krb5-subdomain and ms-subdomain update policies (CVE-2018-5741)

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 7.7 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 Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1520808 - b-root-server's ip-address in named.ca is old.
• BZ - 1578128 - [RFE] Provide delv functionality
• BZ - 1630058 - bind does not support the "log" keyword in a response-policy zone definitions (feature from bind 9.11)
• BZ - 1630160 - internal testsuite uses command dig instead of variable $DIG
• BZ - 1631131 - CVE-2018-5741 bind: Incorrect documentation of krb5-subdomain and ms-subdomain update policies
• BZ - 1631407 - man rndc should mention "negative trust anchors"
• BZ - 1640561 - [RFE] rebase to ESV bind 9.11
• BZ - 1676661 - named user has outdated /bin/false as a shell
• BZ - 1685940 - libisc doesn't initialize entropy pool for ssl context
• BZ - 1720703 - Latest bind (9.9) update now causes zone transfer to always fail.

CVEs

• CVE-2018-5741

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index