Vulnerability Details : CVE-2021-28495
In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, user authentication can be bypassed when API access is enabled via the JSON-RPC APIs. This issue affects: Arista Metamako Operating System All releases in the MOS-0.1x train MOS-0.13 and post releases in the MOS-0.1x train MOS-0.26.6 and below releases in the MOS-0.2x train MOS-0.31.1 and below releases in the MOS-0.3x train
Vulnerability category: BypassGain privilege
Products affected by CVE-2021-28495
- cpe:2.3:o:arista:metamako_operating_system:*:*:*:*:*:*:*:*
- Arista » Metamako Operating SystemVersions from including (>=) 0.10.0 and up to, including, (<=) 0.13.0cpe:2.3:o:arista:metamako_operating_system:*:*:*:*:*:*:*:*
- Arista » Metamako Operating SystemVersions from including (>=) 0.20.0 and up to, including, (<=) 0.26.7cpe:2.3:o:arista:metamako_operating_system:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-28495
0.39%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-28495
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
|
7.2
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L |
3.9
|
2.7
|
Arista Networks, Inc. |
CWE ids for CVE-2021-28495
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by:
- nvd@nist.gov (Primary)
- psirt@arista.com (Secondary)
References for CVE-2021-28495
-
https://www.arista.com/en/support/advisories-notices/security-advisories/12914-security-advisory-66
Security Advisory 0066 - AristaMitigation;Vendor Advisory
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