CVE-2021-28503

The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.

CVSS v3 9.8 CRITICAL
CVSS v2.0 6.8 MEDIUM

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072	Mitigation Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:arista:eos::::::::
	cpe:2.3:o:arista:eos::::::::
	cpe:2.3:o:arista:eos::::::::
	cpe:2.3:o:arista:eos::::::::
	cpe:2.3:o:arista:eos::::::::

History

09 Feb 2022, 20:20

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 6.8 v3 : 9.8
First Time		Arista Arista eos
CPE		cpe:2.3:o:arista:eos::::::::
References	~~(MISC) https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072 -~~	(MISC) https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072 - Mitigation, Patch, Vendor Advisory
CWE		CWE-287

04 Feb 2022, 23:28

Type	Values Removed	Values Added
New CVE

Information

Published : 2022-02-04 23:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-28503

Mitre link : CVE-2021-28503

CVE.ORG link : CVE-2021-28503

JSON object : View

Products Affected

arista

eos

CWE

CWE-287

Improper Authentication

CWE-305

Authentication Bypass by Primary Weakness

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