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MicrosoftCVE-2020-16904

HistoryOct 16, 2020 - 11:15 p.m.

CVE-2020-16904

2020-10-1623:15:13

CWE-863

microsoft

web.nvd.nist.gov

cve-2020-16904

azure

functions

elevation of privilege

vulnerability

nvd

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.002

Percentile

56.5%

JSON

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.

Affected configurations

Nvd

Vulners

Node

microsoftazure_functionsMatch-

VendorProductVersionCPE
microsoftazure_functions-cpe:2.3:a:microsoft:azure_functions:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
microsoft	azure_functions	-	cpe:2.3:a:microsoft:azure_functions:-:::::::*

CNA Affected

[
  {
    "vendor": "Microsoft",
    "product": "Azure Functions",
    "cpes": [],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "N/A",
        "status": "affected"
      }
    ]
  }
]

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16904

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.002

Percentile

56.5%

JSON

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