Vulnerability Report

CVE-2021-28503

Title: Arista Eos Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2021-28503.

CWE Category CWE-287
Published Date Feb 04, 2022
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.4 CVSS v3.1
Exploit Probability (EPSS)
0.40%

Vulnerability Summary

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.

Impacted Vendors

A
arista 1
B
block 1

Reference Links

https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072 https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.4
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
6.8
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-28503 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Stack

No specific products linked.