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CVE-2021-32753— Weak password in API gateway in EdgeX Foundry Edinburgh, Fuji, Geneva, and Hanoi releases allows remote attackers to obtain authentication token via dictionary-based password attack when OAuth2 authentication method is enabled.

Quick assessment

Affected
edgexfoundry edgex-go
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.

EdgeX Foundry是一个开源项目，用于构建物联网边缘计算的通用开放框架。 EdgeX Foundry 存在安全漏洞，该漏洞源于当配置了EdgeX API网关进行OAuth2认证，并且创建了代理用户时，获取OAuth2认证令牌所需的客户端id和客户端机密设置为代理用户的用户名。攻击者可利用该漏洞可以对API网关的OAuth2令牌端点执行基于字典的密码攻击，以获得OAuth2认证令牌。

CVSS 8.3 · High EPSS 0.80% · P54

Possible ATT&CK Techniques 1 AI

T1110.004 · Credential Stuffing
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I. Basic Information for CVE-2021-32753

Vulnerability Information
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Vulnerability Title
Weak password in API gateway in EdgeX Foundry Edinburgh, Fuji, Geneva, and Hanoi releases allows remote attackers to obtain authentication token via dictionary-based password attack when OAuth2 authentication method is enabled.
Source: CVE Program / CVE List V5
Vulnerability Description
EdgeX Foundry is an open source project for building a common open framework for internet-of-things edge computing. A vulnerability exists in the Edinburgh, Fuji, Geneva, and Hanoi versions of the software. When the EdgeX API gateway is configured for OAuth2 authentication and a proxy user is created, the client_id and client_secret required to obtain an OAuth2 authentication token are set to the username of the proxy user. A remote network attacker can then perform a dictionary-based password attack on the OAuth2 token endpoint of the API gateway to obtain an OAuth2 authentication token and use that token to make authenticated calls to EdgeX microservices from an untrusted network. OAuth2 is the default authentication method in EdgeX Edinburgh release. The default authentication method was changed to JWT in Fuji and later releases. Users should upgrade to the EdgeX Ireland release to obtain the fix. The OAuth2 authentication method is disabled in Ireland release. If unable to upgrade and OAuth2 authentication is required, users should create OAuth2 users directly using the Kong admin API and forgo the use of the `security-proxy-setup` tool to create OAuth2 users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
EdgeX Foundry 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EdgeX Foundry是一个开源项目，用于构建物联网边缘计算的通用开放框架。 EdgeX Foundry 存在安全漏洞，该漏洞源于当配置了EdgeX API网关进行OAuth2认证，并且创建了代理用户时，获取OAuth2认证令牌所需的客户端id和客户端机密设置为代理用户的用户名。攻击者可利用该漏洞可以对API网关的OAuth2令牌端点执行基于字典的密码攻击，以获得OAuth2认证令牌。
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
edgexfoundry edgex-go Edinburgh, Fuji, Geneva, Hanoi -

II. Public POCs for CVE-2021-32753

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III. Intelligence Information for CVE-2021-32753

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Vendor Advisories for CVE-2021-32753 (1)

Other References for CVE-2021-32753 (1)

IV. Related Vulnerabilities

Same product: edgex-go
Same vendor: edgexfoundry
Same weakness: CWE-284

V. Comments for CVE-2021-32753

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