Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-28504

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/04/2022
Last modified:
12/04/2022

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.26 (including) 4.26.4m (excluding)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.27 (including) 4.27.1f (excluding)
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:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:ccs-720xp-48zc2:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:ccs-720xp-96zc2:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:ccs-722xpm-48y4:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:ccs-722xpm-48zy8:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:dcs-7010tx-48:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:dcs-7050cx3-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:dcs-7050cx3m-32s:-:*:*:*:*:*:*:*
cpe:2.3:h:arista:dcs-7050sx3-48c8:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools