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CVE-2021-28495

Quick assessment

Affected
Arista Metamako Operating System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Arista Networks MOS是美国Arista Networks公司的一个完全可编程且高度模块化的基于Linux 的网络操作系统，使用熟悉的行业标准CLI，并在Arista 交换系列中运行单个二进制软件映像。 Arista Networks MOS 中存在授权问题漏洞，该漏洞源于产品未对JSON-RPC API访问添加有效的认证。攻击者可通过该漏洞绕过身份验证。 以下产品及版本受到影响：Arista 7130 Systems base on MOS。

CVSS 7.2 · High EPSS 0.93% · P57

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-28495

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Arista Networks MOS 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Arista Networks MOS是美国Arista Networks公司的一个完全可编程且高度模块化的基于Linux 的网络操作系统，使用熟悉的行业标准CLI，并在Arista 交换系列中运行单个二进制软件映像。 Arista Networks MOS 中存在授权问题漏洞，该漏洞源于产品未对JSON-RPC API访问添加有效的认证。攻击者可通过该漏洞绕过身份验证。 以下产品及版本受到影响：Arista 7130 Systems base on MOS。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Arista Metamako Operating System MOS-0.13 ~ MOS-0.13* -

II. Public POCs for CVE-2021-28495

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III. Intelligence Information for CVE-2021-28495

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Other References for CVE-2021-28495 (1)

Same Patch Batch · Arista · 2021-09-09 · 6 CVEs total

CVE-2021-28494 9.6 CRITICAL Arista Networks MOS 授权问题漏洞
CVE-2021-28498 8.7 HIGH Arista Networks MOS 安全漏洞
CVE-2021-28493 8.4 HIGH Arista Networks MOS 授权问题漏洞
CVE-2021-28499 6.3 MEDIUM Arista Networks MOS 加密问题漏洞
CVE-2021-28497 4.4 MEDIUM Arista Networks MOS 安全漏洞

IV. Related Vulnerabilities

Same product: Metamako Operating System
Same vendor: Arista
Same weakness: CWE-287

V. Comments for CVE-2021-28495

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