Vulnerability Details CVE-2021-25219
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 65.8%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
Products affected by CVE-2021-25219
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cpe:2.3:a:isc:bind:9.10.5
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cpe:2.3:a:isc:bind:9.10.7
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cpe:2.3:a:isc:bind:9.11.12
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cpe:2.3:a:isc:bind:9.11.21
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cpe:2.3:a:isc:bind:9.11.27
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cpe:2.3:a:isc:bind:9.11.29
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cpe:2.3:a:isc:bind:9.11.3
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cpe:2.3:a:isc:bind:9.11.31
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cpe:2.3:a:isc:bind:9.11.35
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cpe:2.3:a:isc:bind:9.11.5
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cpe:2.3:a:isc:bind:9.11.6
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cpe:2.3:a:isc:bind:9.11.7
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cpe:2.3:a:isc:bind:9.11.8
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cpe:2.3:a:isc:bind:9.12.0
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cpe:2.3:a:isc:bind:9.16.0
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cpe:2.3:a:isc:bind:9.16.11
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cpe:2.3:a:isc:bind:9.16.12
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cpe:2.3:a:isc:bind:9.16.13
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cpe:2.3:a:isc:bind:9.16.15
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cpe:2.3:a:isc:bind:9.16.19
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cpe:2.3:a:isc:bind:9.16.21
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cpe:2.3:a:isc:bind:9.16.8
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cpe:2.3:a:isc:bind:9.17.0
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cpe:2.3:a:isc:bind:9.17.11
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cpe:2.3:a:isc:bind:9.17.12
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cpe:2.3:a:isc:bind:9.17.16
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cpe:2.3:a:isc:bind:9.17.18
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cpe:2.3:a:isc:bind:9.9.12
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cpe:2.3:a:isc:bind:9.9.13
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cpe:2.3:a:netapp:cloud_backup:-
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cpe:2.3:a:oracle:http_server:12.2.1.3.0
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cpe:2.3:a:oracle:http_server:12.2.1.4.0
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cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8
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cpe:2.3:a:siemens:sinec_infrastructure_network_services:-
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cpe:2.3:a:siemens:sinec_infrastructure_network_services:1.0.1
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:fedoraproject:fedora:33
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cpe:2.3:o:fedoraproject:fedora:34
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cpe:2.3:o:fedoraproject:fedora:35
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cpe:2.3:o:netapp:h300e_firmware:-
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cpe:2.3:o:netapp:h300s_firmware:-
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cpe:2.3:o:netapp:h410c_firmware:-
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cpe:2.3:o:netapp:h410s_firmware:-
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cpe:2.3:o:netapp:h500e_firmware:-
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cpe:2.3:o:netapp:h500s_firmware:-
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cpe:2.3:o:netapp:h700e_firmware:-
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cpe:2.3:o:netapp:h700s_firmware:-