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ISC BIND DoS Vulnerability (CVE-2021-25214) - Windows
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
ISC BIND is prone to a denial of service (DoS) vulnerability.
Insight
Insight
Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone's apex may cause the receiving named server to inadvertently remove the SOA record for the zone in question from the zone database. This leads to an assertion failure when the next SOA refresh query for that zone is made.
Affected Software
Affected Software
BIND 9.8.5 through 9.8.8, 9.9.3 through 9.11.29, 9.12.0 through 9.16.13, 9.9.3-S1 through 9.11.29-S1, 9.16.8-S1 through 9.16.13-S1 and 9.17.0 through 9.17.11.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 9.11.31, 9.16.15, 9.17.12, 9.11.31-S1, 9.16.15-S1 or later.