Description: | BIND servers are vulnerable if they are running an affected version
and are configured to use GSS-TSIG features. In a configuration which
uses BIND's default settings the vulnerable code path is not exposed,
but a server can be rendered vulnerable by explicitly setting valid
values for the tkey-gssapi-keytab or tkey-gssapi-
credentialconfiguration options. Although the default configuration is
not vulnerable, GSS-TSIG is frequently used in networks where BIND is
integrated with Samba, as well as in mixed-server environments that
combine BIND servers with Active Directory domain controllers. The
most likely outcome of a successful exploitation of the vulnerability
is a crash of the named process. However, remote code execution, while
unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27,
9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and
9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also
release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch
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