CVE-2021-28504: On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as protocol then that…

PriorityP341high7.5CVSS 3.1

AVNACLPRNUINSUCNIHAN

EPSS

0.71%

48.7th percentile

On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol field as expected.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
arista	eos	>= 4.26 < 4.26.4m	4.26.4m
arista	eos	>= 4.27 < 4.27.1f	4.27.1f
arista_networks	eos	4.26.3F – 4.26.0	—
arista_networks	eos	4.27.0F – 4.27.0	—

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

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