RHSA-2020:4500: bind security, bug fix, and enhancement update (Moderate)
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.