CVE-2020-26569

published 2020-12-28

CVE-2020-26569: In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded…

Priority P4 28 medium 5.9 CVSS 3.1

AV N AC H PR N UI N S U C N I N A H

In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases in the 4.21.x train; 4.22.7M and below releases in the 4.22.x train; 4.23.5M and below releases in the 4.23.x train; 4.24.2F and below releases in the 4.24.x train.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
arista	eos	4.21.0f – 4.21.12m	—
arista	eos	4.22.0f – 4.22.7m	—
arista	eos	4.23.0f – 4.23.5m	—
arista	eos	4.24.0f – 4.24.2f	—

CVSS provenance

nvd v3.1 5.9 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 4.3 MEDIUM AV:N/AC:M/Au:N/C:N/I:N/A:P

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