CVE-2021-28503
In Arista's EOS software affected releases, eAPI might skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
El impacto de esta vulnerabilidad es que EOS eAPI de Arista puede omitir la reevaluación de las credenciales del usuario cuando es usada la autenticación basada en certificados, lo que permite a atacantes remotos acceder al dispositivo por medio de eAPI
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-03-16 CVE Reserved
- 2022-02-04 CVE Published
- 2024-09-16 CVE Updated
- 2024-10-20 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-287: Improper Authentication
- CWE-305: Authentication Bypass by Primary Weakness
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072 | 2022-08-02 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Arista Search vendor "Arista" | Eos Search vendor "Arista" for product "Eos" | >= 4.22 <= 4.22.9m Search vendor "Arista" for product "Eos" and version " >= 4.22 <= 4.22.9m" | - |
Affected
| ||||||
| Arista Search vendor "Arista" | Eos Search vendor "Arista" for product "Eos" | >= 4.23 <= 4.23.9 Search vendor "Arista" for product "Eos" and version " >= 4.23 <= 4.23.9" | - |
Affected
| ||||||
| Arista Search vendor "Arista" | Eos Search vendor "Arista" for product "Eos" | >= 4.24 <= 4.24.7 Search vendor "Arista" for product "Eos" and version " >= 4.24 <= 4.24.7" | - |
Affected
| ||||||
| Arista Search vendor "Arista" | Eos Search vendor "Arista" for product "Eos" | >= 4.25 <= 4.25.5 Search vendor "Arista" for product "Eos" and version " >= 4.25 <= 4.25.5" | - |
Affected
| ||||||
| Arista Search vendor "Arista" | Eos Search vendor "Arista" for product "Eos" | >= 4.26 <= 4.26.2 Search vendor "Arista" for product "Eos" and version " >= 4.26 <= 4.26.2" | - |
Affected
| ||||||