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[email protected]NVD:CVE-2021-28504

HistoryApr 01, 2022 - 11:15 p.m.

CVE-2021-28504

2022-04-0123:15:09

CWE-863

CWE-284

[email protected]

web.nvd.nist.gov

arista

strata

tcam

vulnerability

access-list

ipv4

vxlan

protocol

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

31.8%

JSON

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 configurations

Nvd

Node

aristaeosRange4.26–4.26.4m

aristaeosRange4.27–4.27.1f

AND

aristaccs-710p-12Match-

aristaccs-710p-16pMatch-

aristaccs-720xp-24y6Match-

aristaccs-720xp-24zy4Match-

aristaccs-720xp-48y6Match-

aristaccs-720xp-48zc2Match-

aristaccs-720xp-96zc2Match-

aristaccs-722xpm-48y4Match-

aristaccs-722xpm-48zy8Match-

aristadcs-7010tx-48Match-

aristadcs-7050cx3-32sMatch-

aristadcs-7050cx3m-32sMatch-

aristadcs-7050sx3-48c8Match-

aristadcs-7050sx3-48yc12Match-

aristadcs-7050sx3-48yc8Match-

aristadcs-7050sx3-96yc8Match-

aristadcs-7050tx3-48c8Match-

VendorProductVersionCPE
aristaeos*cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*
aristaccs-710p-12-cpe:2.3:h:arista:ccs-710p-12:-:*:*:*:*:*:*:*
aristaccs-710p-16p-cpe:2.3:h:arista:ccs-710p-16p:-:*:*:*:*:*:*:*
aristaccs-720xp-24y6-cpe:2.3:h:arista:ccs-720xp-24y6:-:*:*:*:*:*:*:*
aristaccs-720xp-24zy4-cpe:2.3:h:arista:ccs-720xp-24zy4:-:*:*:*:*:*:*:*
aristaccs-720xp-48y6-cpe:2.3:h:arista:ccs-720xp-48y6:-:*:*:*:*:*:*:*
aristaccs-720xp-48zc2-cpe:2.3:h:arista:ccs-720xp-48zc2:-:*:*:*:*:*:*:*
aristaccs-720xp-96zc2-cpe:2.3:h:arista:ccs-720xp-96zc2:-:*:*:*:*:*:*:*
aristaccs-722xpm-48y4-cpe:2.3:h:arista:ccs-722xpm-48y4:-:*:*:*:*:*:*:*
aristaccs-722xpm-48zy8-cpe:2.3:h:arista:ccs-722xpm-48zy8:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
arista	eos	*	cpe:2.3:o:arista:eos::::::::
arista	ccs-710p-12	-	cpe:2.3:h:arista:ccs-710p-12:-:::::::*
arista	ccs-710p-16p	-	cpe:2.3:h:arista:ccs-710p-16p:-:::::::*
arista	ccs-720xp-24y6	-	cpe:2.3:h:arista:ccs-720xp-24y6:-:::::::*
arista	ccs-720xp-24zy4	-	cpe:2.3:h:arista:ccs-720xp-24zy4:-:::::::*
arista	ccs-720xp-48y6	-	cpe:2.3:h:arista:ccs-720xp-48y6:-:::::::*
arista	ccs-720xp-48zc2	-	cpe:2.3:h:arista:ccs-720xp-48zc2:-:::::::*
arista	ccs-720xp-96zc2	-	cpe:2.3:h:arista:ccs-720xp-96zc2:-:::::::*
arista	ccs-722xpm-48y4	-	cpe:2.3:h:arista:ccs-722xpm-48y4:-:::::::*
arista	ccs-722xpm-48zy8	-	cpe:2.3:h:arista:ccs-722xpm-48zy8:-:::::::*

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References

www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.001

Percentile

31.8%

JSON

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