NVD

CVE-2021-28505 Detail

Modified

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

On affected Arista EOS platforms, if a VXLAN match rule exists in an IPv4 access-list that is applied to the ingress of an L2 or an L3 port/SVI, the VXLAN rule and subsequent ACL rules in that access list will ignore the specified IP protocol.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: Arista Networks, Inc.

Base Score: 7.5 HIGH

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.0 MEDIUM

Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073	Exploit Vendor Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073	Exploit Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-863	Incorrect Authorization	NIST
CWE-284	Improper Access Control	Arista Networks, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Initial Analysis by NIST 4/26/2022 1:09:52 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Added	CWE		NIST CWE-863
Added	CPE Configuration		Record truncated, showing 500 of 1232 characters. View Entire Change Record AND OR cpe:2.3:o:arista:eos::::::::* versions from (including) 4.26 up to (excluding) 4.26.4m cpe:2.3:o:arista:eos::::::::* versions from (including) 4.27 up to (excluding) 4.27.1f OR cpe:2.3:h:arista:ccs-710p-12:-:::::::* cpe:2.3:h:arista:ccs-710p-16p:-:::::::* cpe:2.3:h:arista:ccs-720xp-24y6:-:::::::* cpe:2.3:h:arista:ccs-720xp-24zy4:-:::::::* cpe:2.3:h:arista:ccs-720xp-48y6:
Changed	Reference Type	https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073 No Types Assigned	https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073 Exploit, Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-28505
NVD Published Date:
04/14/2022
NVD Last Modified:
11/21/2024
Source:
Arista Networks, Inc.

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Information Technology Laboratory

National Vulnerability Database