FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

BIND -- Remote Denial of Service vulnerability

Affected packages
9.11.14 <= bind911 < 9.11.20
9.16.0 <= bind916 < 9.16.4


VuXML ID f00d1873-b138-11ea-8659-901b0ef719ab
Discovery 2020-06-17
Entry 2020-06-18

ISC reports:

The asterisk character ("*") is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node.

A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure.


CVE Name CVE-2020-8619