CVE-2021-32753
Published: 09 July 2021
Summary
CVE-2021-32753 is a high-severity Improper Access Control (CWE-284) vulnerability in Edgexfoundry Edgex Foundry. Its CVSS base score is 8.3 (High).
Operationally, ranked in the top 45.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-19524
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Central management enforces consistent access-control policies across systems, reducing the likelihood of missing or inconsistent enforcement.
The awareness and training policy mandates training on access control practices, directly reducing the likelihood of improper access control weaknesses being introduced or exploited.
Training covers access control policies and the consequences of improper access grants or usage by users.
Security training teaches access control policies and enforcement, reducing improper access control implementations.
Provides capability to review session content, directly detecting violations of access control.
System audit review detects violations of access controls by identifying unauthorized access attempts.
Control assessments verify that access controls are implemented correctly and operating as intended, detecting improper access control before exploitation.
Requiring formal approval, documented controls, and responsibilities for inter-system exchanges directly enforces proper access control between systems.