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CVE-2020-16904— Azure Functions Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Azure Functions
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.

Microsoft Azure是美国微软（Microsoft）公司的一套开放的企业级云计算平台。 Azure 存在安全漏洞，该漏洞源于Azure 功能验证访问密钥的方式中存在特权提升漏洞。攻击者可利用该漏洞可以在没有正确授权的情况下调用 HTTP 功能。以下产品及版本受到影响： Azure Functions版本。

CVSS 5.3 · Medium EPSS 3.37% · P88
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I. Basic Information for CVE-2020-16904

Vulnerability Information
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Vulnerability Title
Azure Functions Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Azure 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Azure是美国微软（Microsoft）公司的一套开放的企业级云计算平台。 Azure 存在安全漏洞，该漏洞源于Azure 功能验证访问密钥的方式中存在特权提升漏洞。攻击者可利用该漏洞可以在没有正确授权的情况下调用 HTTP 功能。以下产品及版本受到影响： Azure Functions版本。
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
Microsoft Azure Functions N/A -

II. Public POCs for CVE-2020-16904

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III. Intelligence Information for CVE-2020-16904

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Same Patch Batch · Microsoft · 2020-10-16 · 89 CVEs total

CVE-2020-1080 8.8 HIGH Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2020-16898 8.8 HIGH Windows TCP/IP Remote Code Execution Vulnerability
CVE-2020-16911 8.8 HIGH GDI+ Remote Code Execution Vulnerability
CVE-2020-16891 8.8 HIGH Windows Hyper-V Remote Code Execution Vulnerability
CVE-2020-16946 8.7 HIGH Microsoft Office SharePoint XSS Vulnerability
CVE-2020-16945 8.7 HIGH Microsoft Office SharePoint XSS Vulnerability
CVE-2020-16944 8.7 HIGH Microsoft SharePoint Reflective XSS Vulnerability
CVE-2020-16952 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16951 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16935 7.8 HIGH Windows COM Server Elevation of Privilege Vulnerability
CVE-2020-16954 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2020-16940 7.8 HIGH Windows - User Profile Service Elevation of Privilege Vulnerability
CVE-2020-16939 7.8 HIGH Group Policy Elevation of Privilege Vulnerability
CVE-2020-16936 7.8 HIGH Windows Backup Service Elevation of Privilege Vulnerability
CVE-2020-16930 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16929 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16928 7.8 HIGH Microsoft Office Click-to-Run Elevation of Privilege Vulnerability
CVE-2020-16924 7.8 HIGH Jet Database Engine Remote Code Execution Vulnerability
CVE-2020-16931 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2020-16967 7.8 HIGH Windows Camera Codec Pack Remote Code Execution Vulnerability

Showing top 20 of 89 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Azure Functions
Same vendor: Microsoft

V. Comments for CVE-2020-16904

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