RHSA-2020:4500 — Security Advisory

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.

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 (9.11.20). (BZ#1818785)

Security Fix(es):

• bind: asterisk character in an empty non-terminal can cause an assertion failure in rbtdb.c (CVE-2020-8619)

• bind: truncated TSIG response can lead to an assertion failure (CVE-2020-8622)

• bind: remotely triggerable assertion failure in pk11.c (CVE-2020-8623)

• bind: incorrect enforcement of update-policy rules of type "subdomain" (CVE-2020-8624)

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 8.3 Release Notes linked from the References section.