Vulnerability Details : CVE-2021-28506
An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.
Vulnerability category: BypassGain privilege
Exploit prediction scoring system (EPSS) score for CVE-2021-28506
Probability of exploitation activity in the next 30 days: 0.07%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 30 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-28506
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
9.4
|
HIGH | AV:N/AC:L/Au:N/C:N/I:C/A:C |
10.0
|
9.2
|
NIST |
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
3.9
|
5.2
|
NIST |
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
3.9
|
5.2
|
Arista Networks, Inc. |
CWE ids for CVE-2021-28506
-
The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.Assigned by: psirt@arista.com (Secondary)
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: nvd@nist.gov (Primary)
-
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-28506
-
https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
Security Advisory 0071 - AristaExploit;Mitigation;Patch;Vendor Advisory
Products affected by CVE-2021-28506
- 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:*:*:*:*:*:*:*:*