CVE-2021-31207

CVE Published	2021-05-11
Related CWE(s)	CWE-434: Unrestricted Upload of File with Dangerous Type
Related Vendor(s)	microsoft
Related Product(s)	exchange_server
Exploitation Reported (CISA KEV)	2021-11-03
CVSS 3 Base Score	7.2 (HIGH)
CVSS 3 Attack Complexity	LOW
CVSS 3 Attack Vector	NETWORK

Microsoft Exchange Server Security Feature Bypass Vulnerability

Cyber Threat Graph Context

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Threat Reports Related to CVE-2021-31207

Report

APT40 Advisory - PRC MSS tradecraft in action

This advisory, authored by the Australian Cyber Security Centre and multiple other international cybersecurity agencies, outlines the threat posed ...

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Associated CAPEC Patterns

Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1)

In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.

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