Vulnerability Details CVE-2020-3479
A vulnerability in the implementation of Multiprotocol Border Gateway Protocol (MP-BGP) for the Layer 2 VPN (L2VPN) Ethernet VPN (EVPN) address family in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of Border Gateway Protocol (BGP) update messages that contain crafted EVPN attributes. An attacker could exploit this vulnerability by sending BGP update messages with specific, malformed attributes to an affected device. A successful exploit could allow the attacker to cause an affected device to crash, resulting in a DoS condition.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 59.2%
CVSS Severity
CVSS v3 Score 6.1
CVSS v2 Score 7.8
References
Products affected by CVE-2020-3479
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cpe:2.3:h:cisco:1100_integrated_services_router:-
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cpe:2.3:h:cisco:1101_integrated_services_router:-
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cpe:2.3:h:cisco:1109_integrated_services_router:-
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cpe:2.3:h:cisco:1111x_integrated_services_router:-
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cpe:2.3:h:cisco:111x_integrated_services_router:-
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cpe:2.3:h:cisco:1120_integrated_services_router:-
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cpe:2.3:h:cisco:1160_integrated_services_router:-
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cpe:2.3:h:cisco:4221_integrated_services_router:-
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cpe:2.3:h:cisco:4321_integrated_services_router:-
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cpe:2.3:h:cisco:4331_integrated_services_router:-
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cpe:2.3:h:cisco:4351_integrated_services_router:-
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cpe:2.3:h:cisco:4431_integrated_services_router:-
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cpe:2.3:h:cisco:4451-x_integrated_services_router:-
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cpe:2.3:h:cisco:4461_integrated_services_router:-
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cpe:2.3:h:cisco:asr_1001-hx:-
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cpe:2.3:h:cisco:asr_1001-x:-
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cpe:2.3:h:cisco:asr_1002-hx:-
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cpe:2.3:h:cisco:asr_1002-x:-
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cpe:2.3:h:cisco:asr_1004:-
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cpe:2.3:h:cisco:asr_1006-x:-
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cpe:2.3:h:cisco:asr_1006:-
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cpe:2.3:h:cisco:asr_1009-x:-
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cpe:2.3:h:cisco:asr_1013:-
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cpe:2.3:h:cisco:cloud_services_router_1000v:-
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cpe:2.3:o:cisco:ios:-
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cpe:2.3:o:cisco:ios_xe:-