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CVE-2020-16904

MEDIUMCVSS 5.3/10EPSS 3.12%

Last modified

CVE-2020-16904 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. <p>An elevation of privilege vulnerability exists in the way Azure Functions validate access keys.</p> <p>An unauthenticated attacker who successfully exploited this vulnerability could invoke an HTTP Function without proper authorization.</p> <p>This security update addresses the vulnerability by correctly validating access keys used to access HTTP Functions.</p>. EPSS estimates a 3.12% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
3.12%

86.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MicrosoftAzure FunctionsAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-16904?
<p>An elevation of privilege vulnerability exists in the way Azure Functions validate access keys.</p> <p>An unauthenticated attacker who successfully exploited this vulnerability could invoke an HTTP Function without proper authorization.</p> <p>This security update addresses the vulnerability by correctly validating access keys used to access HTTP Functions.</p>
How severe is CVE-2020-16904?
CVE-2020-16904 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 3.12% probability of exploitation in the next 30 days.
How do I fix CVE-2020-16904?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-16904?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST