CVE-2021-28503
CVSS V2 Medium 6.8
CVSS V3 Critical 9.8
Description
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.
Overview
- CVE ID
- CVE-2021-28503
- Assigner
- psirt@arista.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-02-04T23:15:11
- Last Modified Date
- 2022-08-02T15:57:54
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* | 1 | OR | 4.22 | 4.22.9m |
| cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* | 1 | OR | 4.23 | 4.23.9 |
| cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* | 1 | OR | 4.24 | 4.24.7 |
| cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* | 1 | OR | 4.25 | 4.25.5 |
| cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* | 1 | OR | 4.26 | 4.26.2 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072 | Mitigation Patch Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-28503 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28503 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:33:24 | Added to TrackCVE | |||
| 2022-12-06 08:36:39 | 2022-02-04T23:15Z | 2022-02-04T23:15:11 | CVE Published Date | updated |
| 2022-12-06 08:36:39 | 2022-08-02T15:57:54 | CVE Modified Date | updated | |
| 2022-12-06 08:36:39 | Analyzed | Vulnerability Status | updated |