Vulnerability Details CVE-2023-50868
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.121
EPSS Ranking 93.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2023-50868
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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:9.11.36
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cpe:2.3:a:isc:bind:9.11.37
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cpe:2.3:a:isc:bind:9.11.4
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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:9.16.14
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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:9.16.22
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cpe:2.3:a:isc:bind:9.16.32
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cpe:2.3:a:isc:bind:9.16.36
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cpe:2.3:a:isc:bind:9.16.37
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cpe:2.3:a:isc:bind:9.16.43
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cpe:2.3:a:isc:bind:9.16.44
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cpe:2.3:a:isc:bind:9.16.45
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cpe:2.3:a:isc:bind:9.16.8
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cpe:2.3:a:isc:bind:9.18.0
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cpe:2.3:a:isc:bind:9.18.1
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cpe:2.3:a:isc:bind:9.18.10
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cpe:2.3:a:isc:bind:9.18.11
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cpe:2.3:a:isc:bind:9.18.18
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cpe:2.3:a:isc:bind:9.18.19
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cpe:2.3:a:isc:bind:9.18.2
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cpe:2.3:a:isc:bind:9.18.21
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cpe:2.3:a:isc:bind:9.18.3
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cpe:2.3:a:isc:bind:9.18.4
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cpe:2.3:a:isc:bind:9.18.5
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cpe:2.3:a:isc:bind:9.18.6
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cpe:2.3:a:isc:bind:9.18.7
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cpe:2.3:a:isc:bind:9.18.8
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cpe:2.3:a:isc:bind:9.19.0
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cpe:2.3:a:isc:bind:9.19.1
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cpe:2.3:a:isc:bind:9.19.16
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cpe:2.3:a:isc:bind:9.19.17
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cpe:2.3:a:isc:bind:9.19.2
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cpe:2.3:a:isc:bind:9.19.3
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cpe:2.3:a:isc:bind:9.19.4
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cpe:2.3:a:isc:bind:9.19.5
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cpe:2.3:a:isc:bind:9.19.6
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cpe:2.3:a:isc:bind:9.19.8
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cpe:2.3:a:isc:bind:9.19.9
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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:active_iq_unified_manager:-
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cpe:2.3:a:netapp:hci_baseboard_management_controller:-
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cpe:2.3:a:powerdns:recursor:*
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cpe:2.3:a:powerdns:recursor:3.0
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cpe:2.3:a:powerdns:recursor:3.0.1
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cpe:2.3:a:powerdns:recursor:3.1.1
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cpe:2.3:a:powerdns:recursor:3.1.2
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cpe:2.3:a:powerdns:recursor:3.1.3
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cpe:2.3:a:powerdns:recursor:3.1.4
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cpe:2.3:a:powerdns:recursor:3.1.5
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cpe:2.3:a:powerdns:recursor:3.1.6
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cpe:2.3:a:powerdns:recursor:3.1.7
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cpe:2.3:a:powerdns:recursor:3.1.7.1
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cpe:2.3:a:powerdns:recursor:3.1.7.2
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cpe:2.3:a:powerdns:recursor:3.2
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cpe:2.3:a:powerdns:recursor:3.3
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cpe:2.3:a:powerdns:recursor:3.3.1
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cpe:2.3:a:powerdns:recursor:3.5
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cpe:2.3:a:powerdns:recursor:3.5.1
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cpe:2.3:a:powerdns:recursor:3.5.2
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cpe:2.3:a:powerdns:recursor:3.5.3
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cpe:2.3:a:powerdns:recursor:3.6.0
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cpe:2.3:a:powerdns:recursor:3.6.1
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cpe:2.3:a:powerdns:recursor:3.6.2
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cpe:2.3:a:powerdns:recursor:3.6.3
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cpe:2.3:a:powerdns:recursor:3.6.4
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cpe:2.3:a:powerdns:recursor:3.7.0
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cpe:2.3:a:powerdns:recursor:3.7.1
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cpe:2.3:a:powerdns:recursor:3.7.2
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cpe:2.3:a:powerdns:recursor:3.7.3
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cpe:2.3:a:powerdns:recursor:3.7.4
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cpe:2.3:a:powerdns:recursor:4.0.0
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cpe:2.3:a:powerdns:recursor:4.0.1
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cpe:2.3:a:powerdns:recursor:4.0.2
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cpe:2.3:a:powerdns:recursor:4.0.3
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cpe:2.3:a:powerdns:recursor:4.0.4
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cpe:2.3:a:powerdns:recursor:4.0.5
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cpe:2.3:a:powerdns:recursor:4.0.6
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cpe:2.3:a:powerdns:recursor:4.0.7
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cpe:2.3:a:powerdns:recursor:4.0.8
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cpe:2.3:a:powerdns:recursor:4.1.0
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cpe:2.3:a:powerdns:recursor:4.1.1
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cpe:2.3:a:powerdns:recursor:4.1.10
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cpe:2.3:a:powerdns:recursor:4.1.11
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cpe:2.3:a:powerdns:recursor:4.1.12
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cpe:2.3:a:powerdns:recursor:4.1.13
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cpe:2.3:a:powerdns:recursor:4.1.14
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cpe:2.3:a:powerdns:recursor:4.1.15
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cpe:2.3:a:powerdns:recursor:4.1.16
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cpe:2.3:a:powerdns:recursor:4.1.17
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cpe:2.3:a:powerdns:recursor:4.1.18
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cpe:2.3:a:powerdns:recursor:4.1.2
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cpe:2.3:a:powerdns:recursor:4.1.3
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cpe:2.3:a:powerdns:recursor:4.1.4
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cpe:2.3:a:powerdns:recursor:4.1.5
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cpe:2.3:a:powerdns:recursor:4.1.6
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cpe:2.3:a:powerdns:recursor:4.1.7
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cpe:2.3:a:powerdns:recursor:4.1.8
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cpe:2.3:a:powerdns:recursor:4.1.9
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cpe:2.3:a:powerdns:recursor:4.2.0
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cpe:2.3:a:powerdns:recursor:4.2.1
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cpe:2.3:a:powerdns:recursor:4.2.2
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cpe:2.3:a:powerdns:recursor:4.2.3
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cpe:2.3:a:powerdns:recursor:4.2.4
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cpe:2.3:a:powerdns:recursor:4.2.5
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cpe:2.3:a:powerdns:recursor:4.3.0
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cpe:2.3:a:powerdns:recursor:4.3.1
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cpe:2.3:a:powerdns:recursor:4.3.2
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cpe:2.3:a:powerdns:recursor:4.3.3
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cpe:2.3:a:powerdns:recursor:4.3.4
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cpe:2.3:a:powerdns:recursor:4.3.5
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cpe:2.3:a:powerdns:recursor:4.3.6
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cpe:2.3:a:powerdns:recursor:4.3.7
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cpe:2.3:a:powerdns:recursor:4.4.0
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cpe:2.3:a:powerdns:recursor:4.4.1
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cpe:2.3:a:powerdns:recursor:4.4.2
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cpe:2.3:a:powerdns:recursor:4.4.3
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cpe:2.3:a:powerdns:recursor:4.4.4
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cpe:2.3:a:powerdns:recursor:4.4.5
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cpe:2.3:a:powerdns:recursor:4.4.6
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cpe:2.3:a:powerdns:recursor:4.4.7
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cpe:2.3:a:powerdns:recursor:4.4.8
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cpe:2.3:a:powerdns:recursor:4.5.0
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cpe:2.3:a:powerdns:recursor:4.5.1
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cpe:2.3:a:powerdns:recursor:4.5.10
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cpe:2.3:a:powerdns:recursor:4.5.2
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cpe:2.3:a:powerdns:recursor:4.5.4
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cpe:2.3:a:powerdns:recursor:4.5.5
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cpe:2.3:a:powerdns:recursor:4.5.6
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cpe:2.3:a:powerdns:recursor:4.5.7
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cpe:2.3:a:powerdns:recursor:4.5.8
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cpe:2.3:a:powerdns:recursor:4.5.9
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cpe:2.3:a:powerdns:recursor:4.6.0
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cpe:2.3:a:powerdns:recursor:4.6.1
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cpe:2.3:a:powerdns:recursor:4.6.2
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cpe:2.3:a:powerdns:recursor:4.6.3
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cpe:2.3:a:powerdns:recursor:4.6.4
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cpe:2.3:a:powerdns:recursor:4.6.5
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cpe:2.3:a:powerdns:recursor:4.6.6
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cpe:2.3:a:powerdns:recursor:4.7.0
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cpe:2.3:a:powerdns:recursor:4.7.1
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cpe:2.3:a:powerdns:recursor:4.7.2
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cpe:2.3:a:powerdns:recursor:4.7.3
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cpe:2.3:a:powerdns:recursor:4.7.4
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cpe:2.3:a:powerdns:recursor:4.7.5
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cpe:2.3:a:powerdns:recursor:4.8.0
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cpe:2.3:a:powerdns:recursor:4.8.1
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cpe:2.3:a:powerdns:recursor:4.8.2
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cpe:2.3:a:powerdns:recursor:4.8.3
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cpe:2.3:a:powerdns:recursor:4.8.4
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cpe:2.3:h:netapp:hci_compute_node:-
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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:fedoraproject:fedora:38
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cpe:2.3:o:fedoraproject:fedora:39
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cpe:2.3:o:netapp:bootstrap_os:-
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cpe:2.3:o:redhat:enterprise_linux:6.0
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:8.2
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cpe:2.3:o:redhat:enterprise_linux:8.4