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

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CVE-2021-28507

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
14/01/2022
Last modified:
14/07/2022

Description

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

Impact

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

Base Score: 7.10 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

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

Base Score 3.x
7.10
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:S/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.90 MEDIUM
Vector: AV:N/AC:M/Au:S/C:P/I:P/A:N

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

Base Score 2.0
4.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.23.0 (including) 4.23.9m (including)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.24.0 (including) 4.24.7m (including)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.25.0 (including) 4.25.3 (including)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.25.4 (including) 4.25.4m (including)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.25.5 (including) 4.25.5.1m (including)
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.26.0 (including) 4.26.2f (including)
cpe:2.3:o:arista:eos:4.21.0f:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:4.21.1f:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:4.21.3f:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:4.22.0f:*:*:*:*:*:*:*
cpe:2.3:o:arista:eos:4.22.1f:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools