Vulnerability Details CVE-2020-3221
A vulnerability in the Flexible NetFlow Version 9 packet processor of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of parameters in a Flexible NetFlow Version 9 record. An attacker could exploit this vulnerability by sending a malformed Flexible NetFlow Version 9 packet to the Control and Provisioning of Wireless Access Points (CAPWAP) data port of an affected device. An exploit could allow the attacker to trigger an infinite loop, resulting in a process crash that would cause a reload of the device.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 67.4%
CVSS Severity
CVSS v3 Score 8.6
CVSS v2 Score 7.8
References
Products affected by CVE-2020-3221
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cpe:2.3:h:cisco:catalyst_9800-40:-
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cpe:2.3:h:cisco:catalyst_9800-80:-
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cpe:2.3:h:cisco:catalyst_9800-cl:-
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cpe:2.3:h:cisco:catalyst_9800-l-c:-
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cpe:2.3:h:cisco:catalyst_9800-l-f:-
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cpe:2.3:h:cisco:catalyst_9800-l:-
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cpe:2.3:o:cisco:ios_xe:16.10.1
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cpe:2.3:o:cisco:ios_xe:16.10.1a
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cpe:2.3:o:cisco:ios_xe:16.10.1b
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cpe:2.3:o:cisco:ios_xe:16.10.1e
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cpe:2.3:o:cisco:ios_xe:16.10.1s
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cpe:2.3:o:cisco:ios_xe:16.10.2
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cpe:2.3:o:cisco:ios_xe:16.11.1
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cpe:2.3:o:cisco:ios_xe:16.11.1a
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cpe:2.3:o:cisco:ios_xe:16.11.1b
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cpe:2.3:o:cisco:ios_xe:16.11.1c
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cpe:2.3:o:cisco:ios_xe:16.11.1s
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cpe:2.3:o:cisco:ios_xe:16.12.1
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cpe:2.3:o:cisco:ios_xe:16.12.1a
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cpe:2.3:o:cisco:ios_xe:16.12.1c
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cpe:2.3:o:cisco:ios_xe:16.12.1s
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cpe:2.3:o:cisco:ios_xe:16.12.1t