CVE-2020-16904 — MEDIUM (5.3)

Vulnerability Description

An elevation of privilege vulnerability exists in the way Azure Functions validate access keys. An unauthenticated attacker who successfully exploited this vulnerability could invoke an HTTP Function without proper authorization. This security update addresses the vulnerability by correctly validating access keys used to access HTTP Functions.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Azure Functions	-

Related Weaknesses (CWE)

CWE-863

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1690PatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1690PatchVendor Advisory

FAQ

What is CVE-2020-16904?

CVE-2020-16904 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An elevation of privilege vulnerability exists in the way Azure Functions validate access keys. An unauthenticated attacker who successfully exploited this vulnerability could invoke an HTTP...

How severe is CVE-2020-16904?

CVE-2020-16904 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-16904?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Azure Functions.